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Margaret Mine (Germania Mine; Earl Mine; Samson Mine; Goat Mountain Mine), Goat Mtn, Skamania County, Washington, USAi
Regional Level Types
Margaret Mine (Germania Mine; Earl Mine; Samson Mine; Goat Mountain Mine)Mine
Goat MtnMountain
Skamania CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
46° 21' 21'' North , 122° 4' 50'' West
Latitude & Longitude (decimal):
46.35611,-122.08056
GeoHash:
G#: c21ptyzeu
GRN:
N31W62
Type:
Mine
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Morton1,128 (2017)27.0km
Mossyrock751 (2017)36.5km
Mineral202 (2015)40.9km
Packwood342 (2011)41.9km
Ashford217 (2011)44.9km
Mindat Locality ID:
25904
Long-form identifier:
mindat:1:2:25904:3
GUID (UUID V4):
baf4b1e0-9997-4f07-96fa-991e7117fd1e


SE 1/4 section 8, T10N-R6E

A Cu,Au,Ag mine
This mine is located at the base of Goat Mt. It worked a large low grade deposit said to be 500'-1'000' wide. Developments include 600' of adits

Part of the Samson Group (Earl Group)
Alteration: Potassic, Phyllic, Argillic, Propylitic Outward. Propylitic Can Overprint Phyllic Zone

Tectonics: Cascade Volcanic Arc

Deposit: Possibly a mineralized fault gouge u.s. Bureau of mines minerals availability staff did a pefr evaluation of this property in 1980. Most mineralization confined to closely spaced fractures that form stockworks. Ore grades are mostly in outer potassic and inner phyllic zone. Deposit shows concentric alteration and mineralization patterns

Deposit type: Porphyry Cu

Development: Initial exploration work done between 1900 and 1904 by mount st. Helens consolidated mining co. In 1979, the duval corp was developing property As part of its margaret mine project. It drilled 105 holes totaling 68,010 ft. Teck exploration applied for prospecting permit in 1992

Geology: From Derkey and others, 1990, p. 338) The Spirit Lake pluton was emplaced along a series of north-trending Tertiary dikes, plugs, and plutons. The pluton is also on the southwest extension of a pronounced topographic linear that extends from Bumping Lake through Packwood. The Margaret deposit is a classic porphyry copper deposit emplaced in quartz diorite of the Spirit Lake pluton. The quartz diorite was dated by K-Ar methods at 20.6-22 m.y. The deposit is located near the contact of a quartz monzonite phase of the Spirit Lake pluton. Fracture systems, stockworks, and veinlets have localized the deposit. Brecciation is minor. The Margaret deposit exhibits concentric patterns of alteration and mineralization. There is a low-grade core of potassic-alteration surrounded by a phyllic-altered copper-molybdenum zone, then a phyllic-altered copper zone, and then an outer zone of propylitic-alteration. The phyllic-altered copper zone contains tourmaline bearing veinlets and breccia.

Rock formation(s): Spirit Lake Pluton, Main Phase;;
Spirit Lake Pluton, Main Phase


Ore(s): Brecciation Of Host Rocks

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


21 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Azurite
Formula: Cu3(CO3)2(OH)2
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Calcite
Formula: CaCO3
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
β“˜ Copper
Formula: Cu
β“˜ Covellite
Formula: CuS
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Galena
Formula: PbS
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Hematite
Formula: Fe2O3
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ 'Limonite'
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Molybdenite
Formula: MoS2
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Sphalerite
Formula: ZnS
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bornite2.BA.15Cu5FeS4
β“˜Covellite2.CA.05aCuS
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Molybdenite2.EA.30MoS2
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Azurite5.BA.05Cu3(CO3)2(OH)2
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
Unclassified
β“˜'Limonite'-
β“˜'Chlorite Group'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hβ“˜ AzuriteCu3(CO3)2(OH)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cβ“˜ AzuriteCu3(CO3)2(OH)2
Cβ“˜ CalciteCaCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ AzuriteCu3(CO3)2(OH)2
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ CalciteCaCO3
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BorniteCu5FeS4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcociteCu2S
Sβ“˜ CovelliteCuS
Sβ“˜ GalenaPbS
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ AzuriteCu3(CO3)2(OH)2
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ CovelliteCuS
Cuβ“˜ CopperCu
Cuβ“˜ MalachiteCu2(CO3)(OH)2
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
MoMolybdenum
Moβ“˜ MolybdeniteMoS2
PbLead
Pbβ“˜ GalenaPbS

Other Databases

Link to USGS MRDS:10097315

Other Regions, Features and Areas containing this locality

North America
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

Landes, Henry, Thyng, W.S., Lyon, D.A., and Roberts, Milnor, (1902), the Metalliferous Resources of Washington, Except Iron: Washington Geological Survey Annual Report for 1901, V.I, Pt. 2, P. 134.
Huntting, M. (1956): Metal Mines of Washington-Preliminary Report.
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Moen, W.S., (1977), St. Helens and Washougal Mining Districts of the Southern Cascades of Washington: Washington Division of Geology and Earth Resources Information Circular 60, P. 17, 25.
Hollister, V.F., (1979), Porphyry Copper-type Deposits of the Cascade Volcanic Arc, Washington: Minerals Science and Engineering, V. 11, P. 23-25.
Mcfarland, C.R., Mclucas, G.B., Rigby, J.R, and Stoffel, K.L., (1980), Directory of Washington Mining Operations, 1979: Washington Division of Geology and Earth Resources Information Curcular 69, P. 9.
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 pp.338-339
Derkey, R.E., Gulick, C.W., and Lingley, W.S., Jr., (1993), Washington's Mineral Industry - 1992: Washington Geology, V. 21, No. 1, P. 3-25.
Singer, D.A., Berger, V.I., Moring, B.C. (2008) Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. Open-File Report 2008-1155
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