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Mason County, Washington, USA i
Regional Level Types
Mason County County
Washington State
USA Country

Regional Level Types
Mason County	County
Washington	State
USA	Country

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Independence Day at Robertson Pit

Robertson Pit, Mason County, Washington, USA

Solid pocket

Lucky Strike Pit, Mason County, Washington, USA

Fresh Open pocket in pillow basalt

Lucky Strike Pit, Mason County, Washington, USA

Independence Day at Robertson Pit

Robertson Pit, Mason County, Washington, USA

Solid pocket

Lucky Strike Pit, Mason County, Washington, USA

Fresh Open pocket in pillow basalt

Lucky Strike Pit, Mason County, Washington, USA

Independence Day at Robertson Pit

Robertson Pit, Mason County, Washington, USA

Solid pocket

Lucky Strike Pit, Mason County, Washington, USA

Neighbouring regions:

Grays Harbor County, Washington, USA

Jefferson County, Washington, USA

Kitsap County, Washington, USA

Pierce County, Washington, USA

Thurston County, Washington, USA

Type:

County

Largest Settlements:

Place	Population
Shelton	9,834 (2011)
Belfair	3,931 (2011)
Allyn	1,963 (2011)
Grapeview	954 (2015)
Union	631 (2011)
Skokomish	617 (2011)

Mindat Locality ID:

17537

Long-form identifier:

mindat:1:2:17537:0

GUID (UUID V4):

Other/historical names associated with this locality:

Sawamish County

Other Languages:

View 34 more...

French:

comté de Mason, Washington, États-Unis

German:

Mason County, Washington, Vereinigte Staaten

Italian:

contea di Mason, Washington, Stati Uniti d'America

Russian:

Мейсон, Вашингтон, Соединённые Штаты Америки

Simplified Chinese:

梅森县, 华盛顿州, 美国

Spanish:

Condado de Mason, Washington, Estados Unidos

Albanian:

Mason County, Uashington, Shtetet e Bashkuara të Amerikës

Arabic:

مقاطعة ماسون, واشنطن, الولايات المتحدة

Basque:

Mason konderria , Washington

Bavarian:

Mason County, Washington, Vaoanigte Stootn

Bishnupriya Manipuri:

মেশন কাউন্টি, ৱাশিংটন, তিলপারাষ্ট্র

Bulgarian:

Мейсън, Вашингтон, Съединени американски щати

Cebuano:

Mason County , Washington

Czech:

Mason County, Washington, Spojené státy americké

Dutch:

Mason County, Washington, Verenigde Staten

Esperanto:

Kantono Mason, Vaŝingtonio

Farsi/Persian:

شهرستان ماسون، واشینگتن, واشینگتن, ایالات متحده آمریکا

Georgian:

მეისონის ოლქი, ვაშინგტონის შტატი, ამერიკის შეერთებული შტატები

Hebrew:

מחוז מייסון, וושינגטון, ארצות הברית

Hungarian:

Mason megye, Washington, Amerikai Egyesült Államok

Japanese:

メイソン郡, ワシントン州, アメリカ合衆国

Low Saxon/Low German:

Mason County, Washington, USA

Min Dong Chinese:

Mason Gông, Washington

Minnan / Hokkien-Taiwanese:

Mason Kūn

Nepali:

मेसोन काउन्टी, संयुक्त राज्य अमेरिका

Norwegian:

Mason County, Washington, USA

Polish:

Hrabstwo Mason, Waszyngton, Stany Zjednoczone

Portuguese:

Condado de Mason, Washington, Estados Unidos

Romanian:

Comitatul Mason, Washington, Statele Unite ale Americii

Sardinian:

contea de Mason, Washington, Istados Unidos de Amèrica

Serbian:

Mason County, Вашингтон, Сједињене Америчке Државе

Serbo-Croatian:

Mason County, Washington, Sjedinjene Američke Države

Swedish:

Mason County, Washington, USA

Traditional Chinese:

梅森郡, 華盛頓州, 美國

Turkish:

Mason, Washington, Amerika Birleşik Devletleri

Ukrainian:

Мейсон, Вашингтон, Сполучені Штати Америки

Urdu:

میسن کاؤنٹی، واشنگٹن, ریاست واشنگٹن, ریاستہائے متحدہ امریکا

Vietnamese:

Quận Mason, Washington, Chủng Quốc Hoa Kỳ

Waray:

Condado han Mason, Washington, Estados Unidos

Western Punjabi:

میسن کاؤنٹی، واشنگٹن, واشنگٹن, امریکہ

Mason County is a county located in the U.S. state of Washington. The county seat and only incorporated city is Shelton. The county was formed out of Thurston County on March 13, 1854. Originally named Sawamish County, it took its present name in 1864 in honour of Charles H. Mason, the first Secretary of Washington Territory.

Mason County comprises the Shelton micropolitan statistical area and is included in the Seattle-Tacoma combined statistical area.

According to the United States Census Bureau, the county has a total area of 1,051 square miles (2,720 km²), of which 959 square miles (2,480 km²) is land and 92 square miles (240 km²) (8.7%) is water.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

Mineral List

Mineral list contains entries from the region specified including sub-localities

31 valid minerals.

Rock Types Recorded

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ 'Argillaceous limestone'

Detailed Mineral List:

ⓘ Alleghanyite

Formula: Mn²⁺₅(SiO₄)₂(OH)₂

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.39

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

Localities:

Robertson Pit, Mason County, Washington, USA
LeBar Ridge, Mason County, Washington, USA
Lake Cushman Zeolite Occurrence, Mason County, Washington, USA

Habit: trapazohedra to 20mm in diameter

Colour: colorless (some with green chlorite inclusions); white

ⓘ 'Apophyllite Group'

Formula: AB₄[Si₈O₂₀]X · 8H₂O

Locality: Lucky Strike Pit, Mason County, Washington, USA

Habit: Small xls are cubic, larger xls often show pyramid faces.

Colour: Colorless to light green

Description: Apophyllite is one of the rarer minerals at this quarry. Disco ball-like aggregates have been found before without terminations.

References:

Toby Seims Collection

ⓘ Azurite

Formula: Cu₃(CO₃)₂(OH)₂

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Derkey, Robert E., Joseph, Nancy L., Lasmanis, Raymond (1990, November) Metal Mines of Washington - Preliminary Report. Open File Report 90-18. Washington Division of Geology and Earth Resources

ⓘ Baryte

Formula: BaSO₄

Locality: Maple Creek Prospect, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.54

ⓘ Bementite

Formula: Mn₇Si₆O₁₅(OH)₈

Localities: Reported from at least 15 localities in this region.

ⓘ Calcite

Formula: CaCO₃

Localities:

Robertson Pit, Mason County, Washington, USA
Lucky Strike Pit, Mason County, Washington, USA
Mount Lincoln, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

Colour: yellow

ⓘ Calcite var. Manganese-bearing Calcite

Formula: (Ca,Mn)CO₃

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

ⓘ 'Chabazite'

Locality: Robertson Pit, Mason County, Washington, USA

References:

Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.

ⓘ Chalcocite

Formula: Cu₂S

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Chalcopyrite

Formula: CuFeS₂

Localities:

Black Tail Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ 'Chlorite Group'

Locality: Lucky Strike Pit, Mason County, Washington, USA

Description: Not attractive, in fact occasionally forms an annoying druzy layer that is near impossible to take off.

References:

Eric He's Collection

ⓘ Cuprite

Formula: Cu₂O

Localities:

Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Cuprite var. Chalcotrichite

Formula: Cu₂O

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.pages 80, 1975

ⓘ Epidote

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

Locality: Mount Ellinor, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.86

ⓘ 'Feldspar Group'

Locality: Lake Cushman Zeolite Occurrence, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.41

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.39

ⓘ Grossular var. Hibschite

Formula: Ca₃Al₂(SiO₄)_3-x(OH)_4x

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.39

ⓘ Hausmannite

Formula: Mn²⁺Mn³⁺₂O₄

Locality: India claim, Mason County, Washington, USA

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Hematite

Formula: Fe₂O₃

Localities:

Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
McKean claim, Mason County, Washington, USA

ⓘ 'Heulandite Subgroup'

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

Localities:

LeBar Ridge, Mason County, Washington, USA
Lucky Strike Pit, Mason County, Washington, USA

ⓘ Ice

Formula: H₂O

Locality: Shelton, Mason County, Washington, USA

References:

Brittany Burkhardt observations

ⓘ Jacobsite

Formula: Mn²⁺Fe³⁺₂O₄

Localities:

Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Apex Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Johannsenite

Formula: CaMn²⁺Si₂O₆

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

Localities:

Mount Lincoln, Mason County, Washington, USA
Lucky Strike Pit, Mason County, Washington, USA

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.pages 77,80

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Mesolite

Formula: Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O

Localities:

Lucky Strike Pit, Mason County, Washington, USA
Robertson Pit, Mason County, Washington, USA

ⓘ Native Copper

Formula: Cu

Localities:

Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Apex Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

Locality: Robertson Pit, Mason County, Washington, USA

References:

Rocks & Min.: 63:24-28

Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.

ⓘ Neotocite

Formula: (Mn,Fe)SiO₃ · H₂O (?)

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

Localities:

Lake Cushman Zeolite Occurrence, Mason County, Washington, USA
Mount Ellinor, Mason County, Washington, USA
Unspecified roadcuts, Four Stream Ridge, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ 'Pumpellyite Subgroup'

Formula: Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.

ⓘ Pyrite

Formula: FeS₂

Localities:

Robertson Pit, Mason County, Washington, USA
Lucky Strike Pit, Mason County, Washington, USA
Apex Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Quartz

Formula: SiO₂

Localities:

Lake Cushman Zeolite Occurrence, Mason County, Washington, USA
Unspecified roadcuts, Four Stream Ridge, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Rhodochrosite

Formula: MnCO₃

Localities:

Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Apex Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Rhodonite

Formula: CaMn₃Mn[Si₅O₁₅]

Localities:

Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

ⓘ Scolecite

Formula: CaAl₂Si₃O₁₀ · 3H₂O

Locality: LeBar Ridge, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.41

ⓘ 'Smectite Group'

Formula: A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

Locality: Robertson Pit, Mason County, Washington, USA

References:

(n.d.) Rudy Tschernich Zeolite Collection, Rice Museum.

ⓘ 'Stilbite Subgroup'

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

Localities:

LeBar Ridge, Mason County, Washington, USA
Lucky Strike Pit, Mason County, Washington, USA

ⓘ Stilpnomelane

Formula: (K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O

Locality: Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.

ⓘ Tephroite

Formula: Mn²⁺₂(SiO₄)

Locality: Triple Trip Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

References:

Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.39

Gallery:

Mn₇Si₆O₁₅(OH)₈ⓘ Bementite

Bementite, etc.

Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

Bementite, etc.

Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

Bementite, etc.

Black and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA

(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂Oⓘ 'Heulandite Subgroup'

Heulandite Subgroup

Lucky Strike Pit, Mason County, Washington, USA

Heulandite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Heulandite Subgroup

Lucky Strike Pit, Mason County, Washington, USA

Heulandite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Heulandite Subgroup

Lucky Strike Pit, Mason County, Washington, USA

Heulandite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

M_6-7[Al_8-9Si_27-28O₇₂] · nH₂Oⓘ 'Stilbite Subgroup'

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

Stilbite Subgroup, etc.

Lucky Strike Pit, Mason County, Washington, USA

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Ice	4.AA.05	H₂O
ⓘ	Cuprite var. Chalcotrichite	4.AA.10	Cu₂O
ⓘ		4.AA.10	Cu₂O
ⓘ	Jacobsite	4.BB.05	Mn²⁺Fe³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hausmannite	4.BB.10	Mn²⁺Mn³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	var. Manganese-bearing Calcite	5.AB.05	(Ca,Mn)CO₃
ⓘ	Rhodochrosite	5.AB.05	MnCO₃
ⓘ	Azurite	5.BA.05	Cu₃(CO₃)₂(OH)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Group 9 - Silicates
ⓘ	Tephroite	9.AC.05	Mn²⁺₂(SiO₄)
ⓘ	Grossular	9.AD.25	Ca₃Al₂(SiO₄)₃
ⓘ	var. Hibschite	9.AD.25	Ca₃Al₂(SiO₄)_3-x(OH)_4x
ⓘ	Alleghanyite	9.AF.45	Mn²⁺₅(SiO₄)₂(OH)₂
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Johannsenite	9.DA.15	CaMn²⁺Si₂O₆
ⓘ	Rhodonite	9.DK.05	CaMn₃Mn[Si₅O₁₅]
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Neotocite	9.ED.20	(Mn,Fe)SiO₃ · H₂O (?)
ⓘ	Bementite	9.EE.05	Mn₇Si₆O₁₅(OH)₈
ⓘ	Stilpnomelane	9.EG.40	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
ⓘ	Mesolite	9.GA.05	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Scolecite	9.GA.05	CaAl₂Si₃O₁₀ · 3H₂O
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'Apophyllite Group'	-	AB₄[Si₈O₂₀]X · 8H₂O
ⓘ	'Chabazite'	-
ⓘ	'Chlorite Group'	-
ⓘ	'Feldspar Group'	-
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Pumpellyite Subgroup'	-	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
ⓘ	'Smectite Group'	-	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Alleghanyite	Mn₅²⁺(SiO₄)₂(OH)₂
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
H	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
H	ⓘ Bementite	Mn₇Si₆O₁₅(OH)₈
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Grossular var. Hibschite	Ca₃Al₂(SiO₄)_3-x(OH)_4x
H	ⓘ Ice	H₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
H	ⓘ Neotocite	(Mn,Fe)SiO₃ · H₂O (?)
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
H	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
H	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
H	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
C	Carbon
C	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
C	ⓘ Calcite	CaCO₃
C	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Rhodochrosite	MnCO₃
O	Oxygen
O	ⓘ Alleghanyite	Mn₅²⁺(SiO₄)₂(OH)₂
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
O	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
O	ⓘ Baryte	BaSO₄
O	ⓘ Bementite	Mn₇Si₆O₁₅(OH)₈
O	ⓘ Calcite	CaCO₃
O	ⓘ Cuprite var. Chalcotrichite	Cu₂O
O	ⓘ Cuprite	Cu₂O
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
O	ⓘ Hausmannite	Mn²⁺Mn₂³⁺O₄
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Grossular var. Hibschite	Ca₃Al₂(SiO₄)_3-x(OH)_4x
O	ⓘ Ice	H₂O
O	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
O	ⓘ Johannsenite	CaMn²⁺Si₂O₆
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
O	ⓘ Neotocite	(Mn,Fe)SiO₃ · H₂O (?)
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
O	ⓘ Quartz	SiO₂
O	ⓘ Rhodochrosite	MnCO₃
O	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
O	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
O	ⓘ Tephroite	Mn₂²⁺(SiO₄)
O	ⓘ Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
Na	Sodium
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Mg	Magnesium
Mg	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Al	Aluminium
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
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	ⓘ Grossular var. Hibschite	Ca₃Al₂(SiO₄)_3-x(OH)_4x
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Al	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Al	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Si	Silicon
Si	ⓘ Alleghanyite	Mn₅²⁺(SiO₄)₂(OH)₂
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Apophyllite Group	AB₄[Si₈O₂₀]X · 8H₂O
Si	ⓘ Bementite	Mn₇Si₆O₁₅(OH)₈
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Grossular var. Hibschite	Ca₃Al₂(SiO₄)_3-x(OH)_4x
Si	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Si	ⓘ Neotocite	(Mn,Fe)SiO₃ · H₂O (?)
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Si	ⓘ Quartz	SiO₂
Si	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Si	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Si	ⓘ Tephroite	Mn₂²⁺(SiO₄)
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Grossular var. Hibschite	Ca₃Al₂(SiO₄)_3-x(OH)_4x
Ca	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Ca	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Ca	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Ca	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Ca	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Mn	Manganese
Mn	ⓘ Alleghanyite	Mn₅²⁺(SiO₄)₂(OH)₂
Mn	ⓘ Bementite	Mn₇Si₆O₁₅(OH)₈
Mn	ⓘ Hausmannite	Mn²⁺Mn₂³⁺O₄
Mn	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
Mn	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Mn	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Mn	ⓘ Neotocite	(Mn,Fe)SiO₃ · H₂O (?)
Mn	ⓘ Rhodochrosite	MnCO₃
Mn	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Mn	ⓘ Tephroite	Mn₂²⁺(SiO₄)
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Jacobsite	Mn²⁺Fe₂³⁺O₄
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Neotocite	(Mn,Fe)SiO₃ · H₂O (?)
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
Cu	Copper
Cu	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Cuprite var. Chalcotrichite	Cu₂O
Cu	ⓘ Cuprite	Cu₂O
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Ba	Barium
Ba	ⓘ Baryte	BaSO₄

Fossils

There are 14 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

23.0 Ma (Oligocene)

Oldest Fossil Listed

38.0 Ma (Eocene)

Stratigraphic Units

Unit	No. Occurrences	Age
Lincoln Creek	10	23.03 - 20.44 Ma (Miocene)
Lincoln Creek - middle	1	28.1 - 23.03 Ma (Cenozoic)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Colus genus	Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae : *Colus*	38 - 28.1 Ma Paleogene
Cetacea order	Animalia : Chordata : Mammalia : Cetacea	38 - 28.1 Ma Paleogene
Plotopteridae family	Animalia : Chordata : Aves : Suliformes : Plotopteridae	33.9 - 28.1 Ma Oligocene
Odontoceti suborder	Animalia : Chordata : Mammalia : Cetacea : Odontoceti	33.9 - 28.1 Ma Oligocene
Mytilidae family	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae	38 - 28.1 Ma Paleogene
Naticidae family	Animalia : Mollusca : Gastropoda : Littorinimorpha : Naticidae	38 - 28.1 Ma Paleogene
Thyasiridae family	Animalia : Mollusca : Bivalvia : Lucinida : Thyasiridae	28.1 - 23.03 Ma Cenozoic
Coenocyathus hannibali species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Coenocyathus : *Coenocyathus hannibali*	38 - 33.9 Ma Paleogene
Deltocyathus insperatus species	Animalia : Cnidaria : Anthozoa : Scleractinia : Deltocyathidae : Deltocyathus : *Deltocyathus insperatus*	28.1 - 23.03 Ma Cenozoic
Caryophyllia wynoocheensis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Caryophyllia : *Caryophyllia wynoocheensis*	33.9 - 28.1 Ma Oligocene
Megokkos alaskensis species	Animalia : Arthropoda : Malacostraca : Decapoda : Camptandriidae : Megokkos : *Megokkos alaskensis*	33.9 - 28.4 Ma Oligocene
Aturia grandior species	Animalia : Mollusca : Cephalopoda : Nautilida : Aturiidae : Aturia : *Aturia grandior*	38 - 33.9 Ma Paleogene
Rhinoscymnus genus	Animalia : Chordata : Chondrichthyes : Squaliformes : Somniosidae : *Rhinoscymnus*	38 - 28.1 Ma Paleogene
Rhinoscymnus viridiadamas species	Animalia : Chordata : Chondrichthyes : Squaliformes : Somniosidae : Rhinoscymnus : *Rhinoscymnus viridiadamas*	28.1 - 23.03 Ma Cenozoic

Fossil Localities

Click to show 5 fossil localities

USA

Washington
- Mason County
  - Oligocene🐚 LACMVP 6290
  - Cenozoic🐚 Middle Fork Satsop River
  - Paleogene🐚 N. P. 207
  - Oligocene🐚 Vance's creek

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Charles_H._Mason
Wikidata ID:	Q111904
GeoNames ID:	5802584

Localities in this Region

Other Regions, Features and Areas that Intersect

North AmericaContinent

Coast MountainsMountain Range

North America PlateTectonic Plate

Bellingham basinBasin
Cascadia DomainDomain
Pacific Coast RangesAccretionary Complex
Siletzia DomainDomain
Western Washington–Oregon BasinsBasin

USA

Washington
- Olympic Mining DistrictMining District

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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List of minerals arranged by Strunz 10th Edition classification

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