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Elkhorn Prospect, Jefferson County, Washington, USAi
Regional Level Types
Elkhorn ProspectClaim
Jefferson CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
47° 44' 14'' North , 123° 7' 34'' West
Latitude & Longitude (decimal):
47.73739,-123.12618
GRN:
N32W61
Type:
Claim
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Brinnon797 (2011)18.2km
Quilcene596 (2011)21.0km
Seabeck1,105 (2011)24.8km
Bangor Trident Base6,054 (2011)30.8km
Blyn101 (2011)32.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Kitsap Mineral and Gem SocietBremerton, Washington42km
Clallam County Gem & Mineral AssociationPort Angeles, Washington48km
Mindat Locality ID:
17119
Long-form identifier:
mindat:1:2:17119:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Dosewallips Prospect; Karnes Prospect


A prospect consisting of 28 manganese claims on the Dosewallips River. It was developed by several short trenches and adits. Assays ran from 23.4%-26.4% Manganese, mainly in the form of silicates.
Structure: Basalt Is Highly Fractured And Cut By Many Minor Faults

Alteration: Basalt Is Spilitized

Tectonics: Active Margin (Leading Edge Of North American Plate)

Deposit: 3 limestone beds in basalt contain lenses of Mn ore, some to 25 ft thick. See also mrds record m700321

Deposit type: Volcanogenic Mn, Olympic Peninsula

Rock formation(s): Crescent Formation;Crescent Formation


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

11 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Alleghanyite
Formula: Mn2+5(SiO4)2(OH)2
ⓘ Bementite
Formula: Mn7Si6O15(OH)8
ⓘ Bustamite
Formula: CaMn2+(Si2O6)
ⓘ Gonyerite
Formula: Mn2+5Fe3+(Fe3+Si3O10)(OH)8
ⓘ Grossular
Formula: Ca3Al2(SiO4)3
ⓘ Grossular var. Hibschite
Formula: Ca3Al2(SiO4)3-x(OH)4x
ⓘ Hematite
Formula: Fe2O3
ⓘ Jacobsite
Formula: Mn2+Fe3+2O4
ⓘ Johannsenite
Formula: CaMn2+Si2O6
ⓘ Neotocite
Formula: (Mn,Fe)SiO3 · H2O (?)
ⓘ Rhodonite
Formula: CaMn3Mn[Si5O15]
ⓘ Tephroite
Formula: Mn2+2(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘJacobsite4.BB.05Mn2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
Group 9 - Silicates
ⓘTephroite9.AC.05Mn2+2(SiO4)
ⓘGrossular9.AD.25Ca3Al2(SiO4)3
ⓘvar. Hibschite9.AD.25Ca3Al2(SiO4)3-x(OH)4x
ⓘAlleghanyite9.AF.45Mn2+5(SiO4)2(OH)2
ⓘJohannsenite9.DA.15CaMn2+Si2O6
ⓘBustamite9.DG.05CaMn2+(Si2O6)
ⓘRhodonite9.DK.05CaMn3Mn[Si5O15]
ⓘGonyerite9.EC.55Mn2+5Fe3+(Fe3+Si3O10)(OH)8
ⓘNeotocite9.ED.20(Mn,Fe)SiO3 · H2O (?)
ⓘBementite9.EE.05Mn7Si6O15(OH)8

List of minerals for each chemical element

HHydrogen
Hⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Hⓘ BementiteMn7Si6O15(OH)8
Hⓘ GonyeriteMn52+Fe3+(Fe3+Si3O10)(OH)8
Hⓘ Grossular var. HibschiteCa3Al2(SiO4)3-x(OH)4x
Hⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
OOxygen
Oⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Oⓘ BementiteMn7Si6O15(OH)8
Oⓘ BustamiteCaMn2+(Si2O6)
Oⓘ GonyeriteMn52+Fe3+(Fe3+Si3O10)(OH)8
Oⓘ GrossularCa3Al2(SiO4)3
Oⓘ HematiteFe2O3
Oⓘ Grossular var. HibschiteCa3Al2(SiO4)3-x(OH)4x
Oⓘ JacobsiteMn2+Fe23+O4
Oⓘ JohannseniteCaMn2+Si2O6
Oⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Oⓘ RhodoniteCaMn3Mn[Si5O15]
Oⓘ TephroiteMn22+(SiO4)
AlAluminium
Alⓘ GrossularCa3Al2(SiO4)3
Alⓘ Grossular var. HibschiteCa3Al2(SiO4)3-x(OH)4x
SiSilicon
Siⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Siⓘ BementiteMn7Si6O15(OH)8
Siⓘ BustamiteCaMn2+(Si2O6)
Siⓘ GonyeriteMn52+Fe3+(Fe3+Si3O10)(OH)8
Siⓘ GrossularCa3Al2(SiO4)3
Siⓘ Grossular var. HibschiteCa3Al2(SiO4)3-x(OH)4x
Siⓘ JohannseniteCaMn2+Si2O6
Siⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Siⓘ RhodoniteCaMn3Mn[Si5O15]
Siⓘ TephroiteMn22+(SiO4)
CaCalcium
Caⓘ BustamiteCaMn2+(Si2O6)
Caⓘ GrossularCa3Al2(SiO4)3
Caⓘ Grossular var. HibschiteCa3Al2(SiO4)3-x(OH)4x
Caⓘ JohannseniteCaMn2+Si2O6
Caⓘ RhodoniteCaMn3Mn[Si5O15]
MnManganese
Mnⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Mnⓘ BementiteMn7Si6O15(OH)8
Mnⓘ BustamiteCaMn2+(Si2O6)
Mnⓘ GonyeriteMn52+Fe3+(Fe3+Si3O10)(OH)8
Mnⓘ JacobsiteMn2+Fe23+O4
Mnⓘ JohannseniteCaMn2+Si2O6
Mnⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Mnⓘ RhodoniteCaMn3Mn[Si5O15]
Mnⓘ TephroiteMn22+(SiO4)
FeIron
Feⓘ GonyeriteMn52+Fe3+(Fe3+Si3O10)(OH)8
Feⓘ HematiteFe2O3
Feⓘ JacobsiteMn2+Fe23+O4
Feⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)

Other Databases

Link to USGS MRDS:10047953

Localities in this Region

USA

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

Green, S.T. (1945) Manganese Deposits of the Olympic Peninsula, Washington. State of Washington Department of Conservation and Development Division of Mines and Mining Report of Investigations No. 7, 49 pages.
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.
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