Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
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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Poorman Hill, Gold Hill Mining District, Boulder County, Colorado, USAi
Regional Level Types
Poorman HillHill
Gold Hill Mining DistrictMining District
Boulder CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
40° North , 105° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~34km
GRN:
N27W59
Type:
Hill
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Mindat Locality ID:
134705
Long-form identifier:
mindat:1:2:134705:3
GUID (UUID V4):
0


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ⓘ'Gold Amalgam'-

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North AmericaContinent
North America PlateTectonic Plate

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