Kunz, George Frederick (1890) Gems and precious stones of North America - a popular description of their occurrence, value, history, archaeology, and of the collections in which they exist, also a chapter on pearls, and on remarkable foreign gems owned in the United States, illustrated with eight colored plates and numerous minor engravings. The Scientific publishing company.p.205

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

Locality: Zeolite locality, Dillsburg, York County, Pennsylvania, USA

References:

Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey

ⓘ Anatase

Formula: TiO₂

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

Description: Occurances at approximately the 40 01'02"N, 76 31'31"W portion of the quarry. Microcrystals (< 0.2 mm) occuring in calcite or directly on the phyllite schist, along veinlets. Larger xtls found in upper levels within several milky quartz pods, typically 30cm by 6 to 15 m in length. Associated with Brookite occasionally as an alteration of Ilmenite.

References:

Montgomery (Sep & Oct, 1973) PA Mins. (PM) column (129 & 130), Keystone Newsletter.

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Andradite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Anorthite

Formula: Ca(Al₂Si₂O₈)

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ Anorthite var. Bytownite

Formula: (Ca,Na)[Al(Al,Si)Si₂O₈]

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ 'Apatite Group'

Localities: Reported from at least 11 localities in this region.

ⓘ 'Apophyllite Group'

Formula: AB₄[Si₈O₂₀]X · 8H₂O

Locality: Zeolite locality, Dillsburg, York County, Pennsylvania, USA

References:

Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey

ⓘ Aragonite

Formula: CaCO₃

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Aurichalcite

Formula: (Zn,Cu)₅(CO₃)₂(OH)₆

Localities:

Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

ⓘ Azurite

Formula: Cu₃(CO₃)₂(OH)₂

Localities:

Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA
Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

ⓘ Baryte

Formula: BaSO₄

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Bornite

Formula: Cu₅FeS₄

Localities:

York, York County, Pennsylvania, USA
Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA
Reeser's Summit, Frogtown, York County, Pennsylvania, USA

ⓘ Brookite

Formula: TiO₂

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

Habit: Microcrystals to larger, thin, platy xtls, deeply striates parallel to their length.

Colour: transparent (micro-xtls), to light brown

Description: Occurances at approximately the 40 01'02"N, 76 31'31"W portion of the quarry. Microcrystals occuring in calcite or directly on the phyllite schist, along veinlets. Larger xtls found in within several milky quartz pods, typically 30cm by 6 to 15 m in length. Associated with Anatase occasionally as an alteration of Ilmenite.

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Calcite

Formula: CaCO₃

Localities: Reported from at least 21 localities in this region.

Habit: Scalenohedtal and twins

Colour: Pale Yellow to orange

ⓘ Celestine

Formula: SrSO₄

Locality: York Building Supply Quarry, York, York County, Pennsylvania, USA

References:

Colflesh, S. (2010) Mineral News, 26, #5, 2. Analytical confirmation by Lance Kearns.

ⓘ 'Chabazite'

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

www.pennminerals.com (n.d.) http://www.pennminerals.com

ⓘ Chalcocite

Formula: Cu₂S

Localities:

Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA
York, York County, Pennsylvania, USA

ⓘ Chalcopyrite

Formula: CuFeS₂

Localities: Reported from at least 16 localities in this region.

ⓘ Chamosite

Formula: Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Chlorite Group'

Localities: Reported from at least 12 localities in this region.

ⓘ Chloritoid

Formula: Fe²⁺Al₂O(SiO₄)(OH)₂

References:

USGS National Geochemical Database

Rocks File W197671 -W197679

ⓘ Chrysocolla

Formula: Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ Clinochlore

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

References:

Doris Chambers

ⓘ Cobaltite

Formula: CoAsS

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

References:

Pennsylvania Geology, vol. 39(1), 2009 - PA Geol. Survey

ⓘ Cuprite

Formula: Cu₂O

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Datolite

Formula: CaB(SiO₄)(OH)

Localities: Reported from at least 11 localities in this region.

ⓘ Digenite

Formula: Cu₉S₅

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Localities:

County Line Quarry, Wrightsville, York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ Epsomite

Formula: MgSO₄ · 7H₂O

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Fayalite

Formula: Fe²⁺₂(SiO₄)

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

Habit: Millimeter sized grains with a pebbly surface, high relief

Colour: nearly colorless to very pale yellowish green

Description: Occuring in Quartz ferrogabbo, Fayalite has been observed only in thin section. Millimeter sized grains with a pebbly surface, high relief. The grains are nearly colorless to very pale yellowish green with pastel interfefence colors under crossed nicols.

References:

Smith, Robert C., II and Rose, Arthur W. (1972), "Major and Trace Elements in Differentiates of Triassic Diabase and T

Reed, Juliet C. (1976), Annotated Biblio. of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Society of PA, Inc.: 35

ⓘ Fluorite

Formula: CaF₂

Localities:

Zeolite locality, Dillsburg, York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

ⓘ Galena

Formula: PbS

Localities:

Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA
County Line Quarry, Wrightsville, York County, Pennsylvania, USA
Reeser's Summit, Frogtown, York County, Pennsylvania, USA

ⓘ Galena var. Silver-bearing Galena

Formula: PbS with Ag

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

Habit: massive with octahedral and cubic parting

Colour: metalic silver-grey

Fluorescence: N/A

Description: similar to galena from the Pequea-Burnt Mills "silver mines" (located 19 km southeast of the quarry).

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

Localities: Reported from at least 11 localities in this region.

ⓘ Goethite

Formula: Fe³⁺O(OH)

Localities:

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA
Interstate highway 83 roadcut, Leaders Heights, York County, Pennsylvania, USA

ⓘ Goslarite

Formula: ZnSO₄ · 7H₂O

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Greenockite

Formula: CdS

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Mineral collecting in Pennsylvania

pg 226-228

Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey

ⓘ Gypsum

Formula: CaSO₄ · 2H₂O

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Hematite

Formula: Fe₂O₃

Localities: Reported from at least 14 localities in this region.

ⓘ Hemimorphite

Formula: Zn₄Si₂O₇(OH)₂ · H₂O

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

www.pennminerals.com (n.d.) http://www.pennminerals.com

ⓘ Hexahydrite

Formula: Mg(H₂O)₆(SO₄)

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Hydrozincite

Formula: Zn₅(CO₃)₂(OH)₆

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

Habit: platy, lusterous

Colour: Black

Description: Occasionally found partly replaced by/altering to Anatase or Brookite.

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Ilvaite

Formula: CaFe³⁺Fe²⁺₂(Si₂O₇)O(OH)

Locality: Dillsburg, York County, Pennsylvania, USA

References:

Hotz, Preston E. (1953), "Petrology of Granophyre in Diabase near Dillsburg, PA," Geol. Soc. Am.Bull.: 64:675-704.

Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Reed, Juliet C., Min. Soc. of PA, Inc. (1976): 49-50

ⓘ Jarosite

Formula: KFe³⁺₃(SO₄)₂(OH)₆

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'K Feldspar'

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

Localities:

York, York County, Pennsylvania, USA
Zeolite locality, Dillsburg, York County, Pennsylvania, USA

ⓘ Lechatelierite

Formula: SiO₂

Locality: York, York County, Pennsylvania, USA

Description: Excerpt from Pasek, M.A., Block, K. & Pasek, V. (2012): Fulgurite morphology: a classification scheme and clues to formation. "Two fulgurites, both from York County, Pennsylvania, USA, showed the reduction of iron to iron metal with an assortment of Fe–Ti and Si–P compounds with stoichiometry that ranges from nearly pure Fe metal to FeSi. These metal silicides include stoichiometric Fe3Si, Fe2Si, and Fe5Si3, and possibly Fe8Si3 and Fe7Si3, and provide a terrestrial source for these phases, which are typically associated with extraterrestrial material."

References:

Pasek, Matthew A., Block, Kristin, Pasek, Virginia (2012) Fulgurite morphology: a classification scheme and clues to formation. Contributions to Mineralogy and Petrology, 164 (3) 477-492 doi:10.1007/s00410-012-0753-5

ⓘ Lepidocrocite

Formula: Fe³⁺O(OH)

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Limonite'

Localities:

Interstate 83 roadcuts, Lake Redmond, Jacobus, York County, Pennsylvania, USA
Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA
Interstate highway 83 roadcut, Leaders Heights, York County, Pennsylvania, USA

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Localities: Reported from at least 14 localities in this region.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

Localities: Reported from at least 14 localities in this region.

ⓘ 'Manganese Oxides'

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

Jeff Beckert Collection

ⓘ Marcasite

Formula: FeS₂

Localities:

Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

ⓘ 'Mica Group'

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Monazite Group'

Formula: REE(PO₄)

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

Habit: single tabular crystals, rarely as radiating clusters of twins. Resinous luster.

Colour: clear honey yellow

Fluorescence: neodymium-green color under unfiltered shortwave UV light

Description: Occurrs in quartz veins cutting phyllite schist, associated with ilmenite plates altering to anatase or brookite (scarce).

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Localities: Reported from at least 12 localities in this region.

ⓘ Native Copper

Formula: Cu

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Native Gold

Formula: Au

Locality: Delta, Peach Bottom Township, York County, Pennsylvania, USA

References:

Gold in Southeastern Pennsylvania

Jeri L. Jones, Donald W. Schmerling

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

Locality: Zeolite locality, Dillsburg, York County, Pennsylvania, USA

References:

Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey

ⓘ Opal

Formula: SiO₂ · nH₂O

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

Localities: Reported from at least 11 localities in this region.

ⓘ Palygorskite

Formula: ◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Paragonite

Formula: NaAl₂(AlSi₃O₁₀)(OH)₂

Locality: Interstate 83 roadcuts, Lake Redmond, Jacobus, York County, Pennsylvania, USA

References:

Gohn, Gregory S. and Thompson, Allen M. (1974), "Lithofacies in the Marburg and Wissahickon Formations near the Martic Line, York and Lancaster Cos., PA," Geol. Soc. Am. Abstracts with Programs, Vol. 5(1):31.

Reed, Juliet C. (1976), Annotated Biblio. of Mins. New to the PA List 1965-1974, The Mineralogical Soc. of PA, Inc.: 59-60

ⓘ 'Petrified Wood'

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Pyrite

Formula: FeS₂

Localities: Reported from at least 16 localities in this region.

Habit: cubic

Colour: golden

Fluorescence: none

Description: Good crystals to be found up to 1 inch on edge of cubic/elongated cubic habit. Rarely, twinned/penetrating crystals could be found.

ⓘ Pyrolusite

Formula: Mn⁴⁺O₂

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

Localities: Reported from at least 11 localities in this region.

ⓘ Pyrrhotite

Formula: Fe_1-xS

Locality: County Line Quarry, Wrightsville, York County, Pennsylvania, USA

References:

The Mineralogy of Pennsylvania 1966-1975

Robert C. Smith II, pgs. 23-30

ⓘ Quartz

Formula: SiO₂

Localities: Reported from at least 18 localities in this region.

ⓘ Quartz var. Agate

Formula: SiO₂

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Quartz var. Amethyst

Formula: SiO₂

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Quartz var. Chalcedony

Formula: SiO₂

Locality: York, York County, Pennsylvania, USA

References:

Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.

ⓘ Rutile

Formula: TiO₂

Localities:

County Line Quarry, Wrightsville, York County, Pennsylvania, USA
Fawn Grove (Constitution), York County, Pennsylvania, USA
Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Habit: reticulated

Colour: yellow (golden)

Fluorescence: N/A

Description: Reported by A. Montgomery (PA Min. pg. 129), observed on a few Anatase crystals. Not confirmed/observed by Smith in 1976 report (rare).

ⓘ Safflorite

Formula: (Co,Ni,Fe)As₂

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

References:

Pennsylvania Geology, vol. 39(1), 2009 - PA Geol. Survey

ⓘ 'Serpentine Subgroup' ?

Formula: D₃[Si₂O₅](OH)₄

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Smithsonite

Formula: ZnCO₃

Locality: Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

References:

www.jonesgeo.com (2011) http://www.jonesgeo.com/codorus.htm

ⓘ Sperrylite

Formula: PtAs₂

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

References:

Robwert C. Smith, II Ph.D. P.G.

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 6 localities in this region.

ⓘ 'Stilbite Subgroup'

Formula: M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

Locality: Unnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA

References:

www.pennminerals.com (n.d.) http://www.pennminerals.com

ⓘ Sudburyite

Formula: PdSb

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

References:

Pennsylvania Geology, vol. 39(1), 2009 - PA Geol. Survey

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

Localities: Reported from at least 11 localities in this region.

ⓘ Ulvöspinel

Formula: TiFe²⁺₂O₄

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

Description: Discovered in microprobe analysis, accepted from analysis by Robert C. Smith (1973), however no evidence has been presented for a specimen containing greater than 50 mol-percent Ulvöspinel.

References:

Smith, Robert C., II (1973), "Geochemistry of Triassic Diabase from Southeastern Pennsylvania," unpublished PhD Dissertation, 262 p., Pennsylvania State University.

Reed, Juliet C. (1976), Annotated Biblio. of Mins. New to the Pa List 1965-1974, The Mineralogical Soc. of PA, Inc.: 35, 75

ⓘ Ungavaite

Formula: Pd₄Sb₃

Locality: Reeser's Summit, Frogtown, York County, Pennsylvania, USA

References:

Smith and Barnes (2011) Table 4.

ⓘ Wavellite

Formula: Al₃(PO₄)₂(OH)₃ · 5H₂O

Locality: Peach Bottom Township, York County, Pennsylvania, USA

References:

Genth, Frederick August (1875) Preliminary Report on the Mineralogy of Pennsylvania - With an Appendix on the Hydrocarbon Compounds, by Samuel P. Sadtler. Board of Commisioners for the Second Geological Survey. 238 pp.

ⓘ Wurtzite

Formula: (Zn,Fe)S

Locality: Medusa Cement Company Quarry, West York, York County, Pennsylvania, USA

References:

Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey

Gallery:

Ca₃Fe³⁺₂(SiO₄)₃ⓘ Andradite

Andradite

Reeser's Summit, Frogtown, York County, Pennsylvania, USA

Andradite

Reeser's Summit, Frogtown, York County, Pennsylvania, USA

Andradite

Reeser's Summit, Frogtown, York County, Pennsylvania, USA

CaF₂ⓘ Fluorite

Fluorite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Fluorite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Fluorite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Fe₂O₃ⓘ Hematite

Hematite, etc.

Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA

Hematite, etc.

Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA

Hematite, etc.

Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA

ZnSⓘ Sphalerite

Sphalerite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite, etc.

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

Sphalerite

Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York County, Pennsylvania, USA

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Ungavaite	2.AC.35b	Pd₄Sb₃
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Digenite	2.BA.10	Cu₉S₅
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Greenockite	2.CB.45	CdS
ⓘ	Wurtzite	2.CB.45	(Zn,Fe)S
ⓘ	Sudburyite	2.CC.05	PdSb
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Galena	2.CD.10	PbS
ⓘ	var. Silver-bearing Galena	2.CD.10	PbS with Ag
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Sperrylite	2.EB.05a	PtAs₂
ⓘ	Marcasite	2.EB.10a	FeS₂
ⓘ	Safflorite	2.EB.15a	(Co,Ni,Fe)As₂
ⓘ	Cobaltite	2.EB.25	CoAsS
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	Fe³⁺O(OH)
ⓘ	Cuprite	4.AA.10	Cu₂O
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Ulvöspinel	4.BB.05	TiFe²⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz var. Agate	4.DA.05	SiO₂
ⓘ	var. Amethyst	4.DA.05	SiO₂
ⓘ	var. Chalcedony	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Lechatelierite	4.DA.30	SiO₂
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	Anatase	4.DD.05	TiO₂
ⓘ	Brookite	4.DD.10	TiO₂
ⓘ	Lepidocrocite	4.FE.15	Fe³⁺O(OH)
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Smithsonite	5.AB.05	ZnCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Aragonite	5.AB.15	CaCO₃
ⓘ	Azurite	5.BA.05	Cu₃(CO₃)₂(OH)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
ⓘ	Aurichalcite	5.BA.15	(Zn,Cu)₅(CO₃)₂(OH)₆
ⓘ	Hydrozincite	5.BA.15	Zn₅(CO₃)₂(OH)₆
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
ⓘ	Celestine	7.AD.35	SrSO₄
ⓘ	Jarosite	7.BC.10	KFe³⁺₃(SO₄)₂(OH)₆
ⓘ	Hexahydrite	7.CB.25	Mg(H₂O)₆(SO₄)
ⓘ	Epsomite	7.CB.40	MgSO₄ · 7H₂O
ⓘ	Goslarite	7.CB.40	ZnSO₄ · 7H₂O
ⓘ	Gypsum	7.CD.40	CaSO₄ · 2H₂O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Wavellite	8.DC.50	Al₃(PO₄)₂(OH)₃ · 5H₂O
Group 9 - Silicates
ⓘ	Fayalite	9.AC.05	Fe²⁺₂(SiO₄)
ⓘ	Andradite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	Grossular	9.AD.25	Ca₃Al₂(SiO₄)₃
ⓘ	Chloritoid	9.AF.85	Fe²⁺Al₂O(SiO₄)(OH)₂
ⓘ	Datolite	9.AJ.20	CaB(SiO₄)(OH)
ⓘ	Hemimorphite	9.BD.10	Zn₄Si₂O₇(OH)₂ · H₂O
ⓘ	Ilvaite	9.BE.07	CaFe³⁺Fe²⁺₂(Si₂O₇)O(OH)
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Paragonite	9.EC.15	NaAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Chamosite	9.EC.55	Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈
ⓘ	Clinochlore	9.EC.55	Mg₅Al(AlSi₃O₁₀)(OH)₈
ⓘ	Chrysocolla	9.ED.20	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
ⓘ	Palygorskite	9.EE.20	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
ⓘ	Anorthite	9.FA.35	Ca(Al₂Si₂O₈)
ⓘ	var. Bytownite	9.FA.35	(Ca,Na)[Al(Al,Si)Si₂O₈]
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'K Feldspar var. Adularia'	-	KAlSi₃O₈
ⓘ	'Apophyllite Group'	-	AB₄[Si₈O₂₀]X · 8H₂O
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Chabazite'	-
ⓘ	'Chlorite Group'	-
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Limonite'	-
ⓘ	'Monazite Group'	-	REE(PO₄)
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
ⓘ	'Mica Group'	-
ⓘ	'Petrified Wood'	-
ⓘ	'K Feldspar'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃
ⓘ	'Serpentine Subgroup' ?	-	D₃[Si₂O₅](OH)₄
ⓘ	'Manganese Oxides'	-
ⓘ	'Apatite Group'	-
ⓘ	'Allanite Group'	-	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
H	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
H	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Chamosite	Fe₅²⁺Al(AlSi₃O₁₀)(OH)₈
H	ⓘ Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂
H	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
H	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
H	ⓘ Datolite	CaB(SiO₄)(OH)
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Epsomite	MgSO₄ · 7H₂O
H	ⓘ Goethite	Fe³⁺O(OH)
H	ⓘ Goslarite	ZnSO₄ · 7H₂O
H	ⓘ Gypsum	CaSO₄ · 2H₂O
H	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Hexahydrite	Mg(H₂O)₆(SO₄)
H	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
H	ⓘ Ilvaite	CaFe³⁺Fe₂²⁺(Si₂O₇)O(OH)
H	ⓘ Jarosite	KFe₃³⁺(SO₄)₂(OH)₆
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Lepidocrocite	Fe³⁺O(OH)
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
H	ⓘ Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
H	ⓘ Wavellite	Al₃(PO₄)₂(OH)₃ · 5H₂O
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
H	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
B	Boron
B	ⓘ Datolite	CaB(SiO₄)(OH)
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
C	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Smithsonite	ZnCO₃
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
O	ⓘ Quartz var. Agate	SiO₂
O	ⓘ Quartz var. Amethyst	SiO₂
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Anatase	TiO₂
O	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Anorthite	Ca(Al₂Si₂O₈)
O	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
O	ⓘ Aragonite	CaCO₃
O	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
O	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
O	ⓘ Baryte	BaSO₄
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Brookite	TiO₂
O	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
O	ⓘ Calcite	CaCO₃
O	ⓘ Celestine	SrSO₄
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Chamosite	Fe₅²⁺Al(AlSi₃O₁₀)(OH)₈
O	ⓘ Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂
O	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
O	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
O	ⓘ Cuprite	Cu₂O
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Datolite	CaB(SiO₄)(OH)
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Epsomite	MgSO₄ · 7H₂O
O	ⓘ Fayalite	Fe₂²⁺(SiO₄)
O	ⓘ Goethite	Fe³⁺O(OH)
O	ⓘ Goslarite	ZnSO₄ · 7H₂O
O	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
O	ⓘ Gypsum	CaSO₄ · 2H₂O
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Hexahydrite	Mg(H₂O)₆(SO₄)
O	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Ilvaite	CaFe³⁺Fe₂²⁺(Si₂O₇)O(OH)
O	ⓘ Jarosite	KFe₃³⁺(SO₄)₂(OH)₆
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Lechatelierite	SiO₂
O	ⓘ Lepidocrocite	Fe³⁺O(OH)
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Monazite Group	REE(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
O	ⓘ Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Smithsonite	ZnCO₃
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	ⓘ Ulvöspinel	TiFe₂²⁺O₄
O	ⓘ Wavellite	Al₃(PO₄)₂(OH)₃ · 5H₂O
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorite	CaF₂
Na	Sodium
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Epsomite	MgSO₄ · 7H₂O
Mg	ⓘ Hexahydrite	Mg(H₂O)₆(SO₄)
Mg	ⓘ Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Al	Aluminium
Al	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Al	ⓘ Chamosite	Fe₅²⁺Al(AlSi₃O₁₀)(OH)₈
Al	ⓘ Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂
Al	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Al	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
Al	ⓘ Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Al	ⓘ Wavellite	Al₃(PO₄)₂(OH)₃ · 5H₂O
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Si	ⓘ Quartz var. Agate	SiO₂
Si	ⓘ Quartz var. Amethyst	SiO₂
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Si	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Chamosite	Fe₅²⁺Al(AlSi₃O₁₀)(OH)₈
Si	ⓘ Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂
Si	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Si	ⓘ Datolite	CaB(SiO₄)(OH)
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Fayalite	Fe₂²⁺(SiO₄)
Si	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Ilvaite	CaFe³⁺Fe₂²⁺(Si₂O₇)O(OH)
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Lechatelierite	SiO₂
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O
Si	ⓘ Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Si	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
P	Phosphorus
P	ⓘ Monazite Group	REE(PO₄)
P	ⓘ Wavellite	Al₃(PO₄)₂(OH)₃ · 5H₂O
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Celestine	SrSO₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Cobaltite	CoAsS
S	ⓘ Digenite	Cu₉S₅
S	ⓘ Epsomite	MgSO₄ · 7H₂O
S	ⓘ Galena	PbS
S	ⓘ Goslarite	ZnSO₄ · 7H₂O
S	ⓘ Greenockite	CdS
S	ⓘ Gypsum	CaSO₄ · 2H₂O
S	ⓘ Hexahydrite	Mg(H₂O)₆(SO₄)
S	ⓘ Jarosite	KFe₃³⁺(SO₄)₂(OH)₆
S	ⓘ Marcasite	FeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Sphalerite	ZnS
S	ⓘ Wurtzite	(Zn,Fe)S
S	ⓘ Galena var. Silver-bearing Galena	PbS with Ag
K	Potassium
K	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Jarosite	KFe₃³⁺(SO₄)₂(OH)₆
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Orthoclase	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ca	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Datolite	CaB(SiO₄)(OH)
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Ca	ⓘ Gypsum	CaSO₄ · 2H₂O
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Ilvaite	CaFe³⁺Fe₂²⁺(Si₂O₇)O(OH)
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ti	Titanium
Ti	ⓘ Anatase	TiO₂
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Brookite	TiO₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Ulvöspinel	TiFe₂²⁺O₄
Mn	Manganese
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Chamosite	Fe₅²⁺Al(AlSi₃O₁₀)(OH)₈
Fe	ⓘ Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Fayalite	Fe₂²⁺(SiO₄)
Fe	ⓘ Goethite	Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Ilvaite	CaFe³⁺Fe₂²⁺(Si₂O₇)O(OH)
Fe	ⓘ Jarosite	KFe₃³⁺(SO₄)₂(OH)₆
Fe	ⓘ Lepidocrocite	Fe³⁺O(OH)
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Marcasite	FeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Safflorite	(Co,Ni,Fe)As₂
Fe	ⓘ Ulvöspinel	TiFe₂²⁺O₄
Fe	ⓘ Wurtzite	(Zn,Fe)S
Co	Cobalt
Co	ⓘ Cobaltite	CoAsS
Co	ⓘ Safflorite	(Co,Ni,Fe)As₂
Ni	Nickel
Ni	ⓘ Safflorite	(Co,Ni,Fe)As₂
Cu	Copper
Cu	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
Cu	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Cu	ⓘ Cuprite	Cu₂O
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Digenite	Cu₉S₅
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Zn	Zinc
Zn	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
Zn	ⓘ Goslarite	ZnSO₄ · 7H₂O
Zn	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
Zn	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
Zn	ⓘ Smithsonite	ZnCO₃
Zn	ⓘ Sphalerite	ZnS
Zn	ⓘ Wurtzite	(Zn,Fe)S
As	Arsenic
As	ⓘ Cobaltite	CoAsS
As	ⓘ Safflorite	(Co,Ni,Fe)As₂
As	ⓘ Sperrylite	PtAs₂
Sr	Strontium
Sr	ⓘ Celestine	SrSO₄
Pd	Palladium
Pd	ⓘ Sudburyite	PdSb
Pd	ⓘ Ungavaite	Pd₄Sb₃
Ag	Silver
Ag	ⓘ Galena var. Silver-bearing Galena	PbS with Ag
Cd	Cadmium
Cd	ⓘ Greenockite	CdS
Sb	Antimony
Sb	ⓘ Sudburyite	PdSb
Sb	ⓘ Ungavaite	Pd₄Sb₃
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
Pt	Platinum
Pt	ⓘ Sperrylite	PtAs₂
Au	Gold
Au	ⓘ Native Gold	Au
Pb	Lead
Pb	ⓘ Galena	PbS
Pb	ⓘ Galena var. Silver-bearing Galena	PbS with Ag

Fossils

There are 78 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

Youngest Fossil Listed

201 Ma (Late/Upper Triassic)

Oldest Fossil Listed

541 Ma (Cambrian)

Stratigraphic Units

Click here to view 8 stratigraphic units.

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Dodecaactinella genus	Animalia : Porifera : Polyactinellidae : *Dodecaactinella*	516 - 513 Ma Cambrian
Chancelloria genus	Animalia : Chancelloriidae : *Chancelloria*	516 - 513 Ma Cambrian
Anomalocaris genus	Animalia : Arthropoda : Anomalocarididae : *Anomalocaris*	516 - 513 Ma Cambrian
Salterella genus	Agmata : Salterellidae : *Salterella*	516 - 513 Ma Cambrian
Hyolithes genus	Animalia : Hyolitha : Hyolithida : Hyolithidae : *Hyolithes*	516 - 513 Ma Cambrian
Pelagiella genus	Animalia : Mollusca : Pelagiellidae : *Pelagiella*	516 - 513 Ma Cambrian
Esmeraldina genus	Animalia : Arthropoda : Trilobita : Redlichiida : Holmiidae : *Esmeraldina*	516 - 513 Ma Cambrian
Olenellus genus	Animalia : Arthropoda : Trilobita : Redlichiida : Olenellidae : *Olenellus*	516 - 513 Ma Cambrian
Agnostus genus	Animalia : Arthropoda : Trilobita : Agnostida : Agnostidae : *Agnostus*	516 - 513 Ma Cambrian
Eoagnostus genus	Animalia : Arthropoda : Trilobita : Agnostida : Spinagnostidae : *Eoagnostus*	516 - 513 Ma Cambrian
Bonniella genus	Animalia : Arthropoda : Trilobita : Corynexochida : Dorypygidae : *Bonniella*	516 - 513 Ma Cambrian
Poliella genus	Animalia : Arthropoda : Trilobita : Corynexochida : Dolichometopidae : *Poliella*	516 - 513 Ma Cambrian
Prozacanthoides genus	Animalia : Arthropoda : Trilobita : Corynexochida : Zacanthoididae : *Prozacanthoides*	516 - 513 Ma Cambrian
Chancia genus	Animalia : Arthropoda : Trilobita : Ptychopariida : Alokistocaridae : *Chancia*	516 - 513 Ma Cambrian
Kochiella genus	Animalia : Arthropoda : Trilobita : Ptychopariida : Alokistocaridae : *Kochiella*	516 - 513 Ma Cambrian
Ptychoparella genus	Animalia : Arthropoda : Trilobita : Ptychopariida : Ptychopariidae : *Ptychoparella*	516 - 513 Ma Cambrian
Lingulella genus	Animalia : Brachiopoda : Lingulata : Lingulida : Obolidae : *Lingulella*	516 - 513 Ma Cambrian
Acrothele genus	Animalia : Brachiopoda : Lingulata : Lingulida : Acrothelidae : *Acrothele*	516 - 513 Ma Cambrian
Hadrotreta genus	Animalia : Brachiopoda : Lingulata : Acrotretida : Acrotretidae : *Hadrotreta*	516 - 513 Ma Cambrian
Micromitra genus	Animalia : Brachiopoda : Paterinidae : *Micromitra*	516 - 513 Ma Cambrian
Nisusia genus	Animalia : Brachiopoda : Kutorginata : Kutorginida : Nisusiidae : *Nisusia*	516 - 513 Ma Cambrian
Camptostroma genus	Animalia : Echinodermata : Camptostromoidea : Camptostromatoida : *Camptostroma*	516 - 513 Ma Cambrian
Metoposauridae family	Animalia : Chordata : Osteichthyes : Temnospondyli : Metoposauridae	228 - 208.5 Ma Late/Upper Triassic
Phytosauria unranked clade	Animalia : Chordata : Reptilia : Eosuchia : Phytosauria	228 - 208.5 Ma Late/Upper Triassic
Dinosauria order	Animalia : Chordata : Reptilia : Dinosauria	237 - 201.3 Ma Mesozoic
Rhynchosauroides genus	Animalia : Chordata : Reptilia : Rhynchocephalia : *Rhynchosauroides*	228 - 208.5 Ma Late/Upper Triassic
Apatopus genus	Animalia : Chordata : Reptilia : Phytosauridae : *Apatopus*	228 - 208.5 Ma Late/Upper Triassic
Rutiodon carolinensis species	Animalia : Chordata : Reptilia : Phytosauridae : Rutiodon : *Rutiodon carolinensis*	228 - 208.5 Ma Late/Upper Triassic
Revueltosaurus genus	Animalia : Chordata : Reptilia : *Revueltosaurus*	228 - 208.5 Ma Late/Upper Triassic
Eoobolus priscus species	Animalia : Brachiopoda : Lingulata : Lingulida : Eoobolidae : Eoobolus : *Eoobolus priscus*	516 - 513 Ma Cambrian
Yochelcionella chinensis species	Animalia : Mollusca : Helcionelloida : Helcionellida : Yochelcionellidae : Yochelcionella : *Yochelcionella chinensis*	516 - 513 Ma Cambrian
Yochelcionella greenlandica species	Animalia : Mollusca : Helcionelloida : Helcionellida : Yochelcionellidae : Yochelcionella : *Yochelcionella greenlandica*	516 - 513 Ma Cambrian
Planutenia flectata species	Animalia : Mollusca : Stenothecidae : Planutenia : *Planutenia flectata*	516 - 513 Ma Cambrian
Yochelcionella americana species	Animalia : Mollusca : Helcionelloida : Helcionellida : Yochelcionellidae : Yochelcionella : *Yochelcionella americana*	516 - 513 Ma Cambrian
Grallator tenuis species	Animalia : Chordata : Saurischia : Eubrontidae : Grallator (Eubrontes) : *Grallator tenuis*	237 - 201.3 Ma Mesozoic
Eubrontes sillimani species	Animalia : Chordata : Saurischia : Eubrontidae : Grallator (Eubrontes) : *Eubrontes sillimani*	237 - 201.3 Ma Mesozoic
Anomoepus scambus species	Animalia : Chordata : Ornithischia : Moyenisauropodidae : Anomoepus : *Anomoepus scambus*	228 - 208.5 Ma Late/Upper Triassic
Batrachopus gracilis species	Animalia : Chordata : Reptilia : Crocodylia : Batrachopodidae : Batrachopus : *Batrachopus gracilis*	228 - 208.5 Ma Late/Upper Triassic
Anchisauripus milfordensis species	Animalia : Chordata : Saurischia : Eubrontidae : Grallator (Eubrontes) : *Anchisauripus milfordensis*	228 - 208.5 Ma Late/Upper Triassic
Olenellus roddyi species	Animalia : Arthropoda : Trilobita : Redlichiida : Olenellidae : Olenellus : *Olenellus roddyi*	516 - 513 Ma Cambrian
Hyolithellus micans species	Animalia : Hyolithelminthida : Hyolithellidae : Hyolithellus : *Hyolithellus micans*	516 - 513 Ma Cambrian
Koskinonodon perfectus species	Animalia : Chordata : Osteichthyes : Temnospondyli : Metoposauridae : Koskinonodon : *Koskinonodon perfectus*	228 - 208.5 Ma Late/Upper Triassic
Conotheca australiensis species	Animalia : Hyolitha : Orthothecida : Circothecidae : Conotheca : *Conotheca australiensis*	516 - 513 Ma Cambrian
Synorichthys genus	Animalia : Chordata : Actinopteri : Palaeonisciformes : Redfieldiidae : *Synorichthys*	228 - 208.5 Ma Late/Upper Triassic
Kootenia genus	Animalia : Arthropoda : Trilobita : Corynexochida : Dorypygidae : *Kootenia*	516 - 513 Ma Cambrian
Lepidocystis wanneri species	Animalia : Echinodermata : Eocrinoidea : Imbricata : Lepidocystis : *Lepidocystis wanneri*	516 - 513 Ma Cambrian
Scoyenia genus	*Scoyenia*	228 - 208.5 Ma Late/Upper Triassic
Salterella conulata species	Agmata : Salterellidae : Salterella : *Salterella conulata*	541 - 513 Ma Cambrian
Wanneria walcottana species	Animalia : Arthropoda : Trilobita : Redlichiida : Wanneriidae : Wanneria : *Wanneria walcottana*	516 - 513 Ma Cambrian
Eothele tubulus species	Animalia : Brachiopoda : Lingulata : Lingulida : Acrothelidae : Eothele : *Eothele tubulus*	516 - 513 Ma Cambrian

Fossil Localities

Click to show 12 fossil localities

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/York_County,_Pennsylvania
Wikidata ID:	Q490914
GeoNames ID:	5220355

Localities in this Region

USA

Pennsylvania
- York County
  - Jackson Township
    - Thomasville
      - Thomasville Crushed Stone Quarry
  - ⭔Jacobus
    - ⭔Lake Redmond
      - Interstate 83 roadcuts
  - Leaders Heights
    - Interstate highway 83 roadcut
  - New Oxford
    - Tarmack Quarry
  - ⭔Peach Bottom Township
    - Delta
      - Electric Quarry
      - Funkhouser Quarry
  - ⭔Warrington Township
    - Rossville
      - Unnamed roadcut
  - ⭔West York
  - Wrightsville
    - County Line Quarry
  - ⭔York
    - York Building Supply Quarry

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Laurentides DomainPassive Margin
SCAB DomainDomain
Southern and Central ApplachianAccretionary Complex

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

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Localities in this Region

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York County, Pennsylvania, USA i
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