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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Oso Prospect, Chichagof Mining District (Chicagof Mining District), Hoonah-Angoon Census Area, Alaska, USAi
Regional Level Types
Oso ProspectProspect
Chichagof Mining District (Chicagof Mining District)Mining District
Hoonah-Angoon Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
57° 58' 12'' North , 136° 14' 5'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Gustavus434 (2017)57.3km
Mindat Locality ID:
199280
Long-form identifier:
mindat:1:2:199280:2
GUID (UUID V4):
0


Location: The Oso prospect is at an elevation of about 200 feet near the mouth of an unnamed creek, about a mile north-northwest of the town of Pelican. The prospect is 0.2 mile north of the center of sec. 18, T. 45 S., R. 57 E. It is MAS no. 0021140002 (U.S. Bureau of Land Management, 2002). The location is accurate within about 0.2 mile.
Geology: Loney and others (1975) map the rocks in the area of this prospect as Paleozoic sedimentary and volcanic rocks that are intruded by, or are roof pendants in a Cretaceous diorite batholith. The Paleozoic rocks have been thermally metamorphosed to hornfels, granofels, marble, schist, and amphibolite. The rocks are cut by numerous faults of diverse strike, the most prominent of which is the Peril Strait Fault, a regional-scale, northwest-striking, steeply-dipping fault whose trace is along Lisianski Inlet just southwest of the prospect. The only published information about this prospect is that is a lode claim for an unspecified commodity (U.S. Bureau of Land Management, 2002).
Development Status: Undetermined.

List of minerals for each chemical element

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Link to USGS - Alaska:SI022

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