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Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USAi
Regional Level Types
Wiant's Quarry (Weiant Quarry)Quarry
PilotUnincorporated Area
Cecil CountyCounty
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 42' 32'' North , 76° 11' 21'' West
Latitude & Longitude (decimal):
39.70892,-76.18935
GRN:
N27W43
Type:
Quarry
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Wakefield609 (2017)7.3km
Darlington409 (2011)7.8km
Little Britain372 (2017)10.0km
Rising Sun2,859 (2017)10.9km
Delta724 (2017)11.9km
Mindat Locality ID:
51530
Long-form identifier:
mindat:1:2:51530:1
GUID (UUID V4):
0


A desilicated pegmatite in serpentine.

Shannon (1927) quotes Samuel G. Gordon's paper on "Desilicated Granitic Pegmatites of the Vicinity of the Pennsylvania-Maryland State Line":

"That the albitite of Wiant's quarry, three quarters of a mile northeast of Pilot, Cecil County, Maryland, is filled with miarolitic cavities which are lined with minute, colorless, albite crystals. He further says that the minute, transparent, greenish, highly modified beryl crystals occur rarely implanted on the albite, while not infrequently the rest of the cavity is filled with matted masses of dark green actinolite needles.”

“Mr. Gordon then suggested that it was probable that the supposed beryl crystals were in reality apatite. Mr. Gordon very kindly forwarded the writer several specimens which he had previously collected. These have been studied in the Museum’s Laboratory and the mineral was found to be apatite.”

“The apatite crystals are sparsely scattered over the drusy crusts of colorless or brown, iron-stained albite crystals which line the narrow miarolitic cavities in massive white albite. Individual crystals of the apatites reach a length of 4 or 5 mm, with a thickness of 2 mm, although most of them are somewhat smaller. The larger ones are green while the smaller ones are colorless and are not easy to distinguish from the colorless albite crystals on which they rest. The longer apatite crystals show cleavage parallel to the base. Many of the larger ones are bluish-green, partly opaque, and rather soft and friable as though they had suffered partial disintegration through weathering.”

Deposit: The chrome bearing sand is covered by about 5 ft of overburden. The chromite content is said to be low and Cr:Fe ratio fair. No systematic sampling or investigation of the deposit seems to have been done. Date of comments 1975.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


11 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
ⓘ Beryl
Formula: Be3Al2(Si6O18)
Description: Originally reported as beryl, Samuel G. Gordon (1920's) suggested that the supposed beryls were probably apatite. This was later proven by Earl V. Shannon who analysed some of these specimens which Gordon had sent him.
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ 'Deweylite'
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Magnesite
Formula: MgCO3
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘ 'Wad'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMagnesite5.AB.05MgCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘBeryl ?9.CJ.05Be3Al2(Si6O18)
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘBeidellite9.EC.40(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
ⓘVermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Deweylite'-
ⓘ'Wad'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ OpalSiO2 · nH2O
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MagnesiteMgCO3
Oⓘ OpalSiO2 · nH2O
Oⓘ QuartzSiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ PyriteFeS2
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ PyriteFeS2
Feⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

Other Databases

Link to USGS MRDS:10266794

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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.

References

Pearre N Heyl a Jr USGS Bul (1082)k Pg 784 1960
Shannon, Earl V. (1927) Apatite crystals from Wiant's Quarry, near Pilot, Maryland. American Mineralogist, 12 (11) 408-410
Singewald, J. T. (1928) Notes on feldspar, quartz, chrome and manganese in Maryland: Maryland Geological Survey vol. 12 part 2: 91-194.
Ostrander, Charles W., Price, Jr, Walter E. (1940) Minerals of Maryland. The Natural History Society of Maryland, Baltimore, Maryland, USA. 14pp.
Pearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 813.
www.minsocam.org (n.d.) http://www.minsocam.org/ammin/AM12/AM12_408.pdf
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