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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Tennantite Subgroup from
Heddleston (Anaconda Mine - 0300490146; Mike Horse Mine - 0300490362; Carbonate Mine - 0300490040; Heddleston Deposit; Paymaster Mine - 0300490242; Midnight Mine - 0300490284; Heddleston Group), Seven-Up Pete Mining District, Lewis and Clark County, Montana, USA


Classification
Species:'Tennantite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)As4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tennantite Subgroup data
Locality Data:Click here to view Heddleston (Anaconda Mine - 0300490146; Mike Horse Mine - 0300490362; Carbonate Mine - 0300490040; Heddleston Deposit; Paymaster Mine - 0300490242; Midnight Mine - 0300490284; Heddleston Group), Seven-Up Pete Mining District, Lewis and Clark County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:635133
Long-form Identifier:1:3:635133:5
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
19.9km (12.3 miles) ⓘBissonette Mine (Includes Champion and Liberty Claims), Wolf Creek Mining District, Lewis and Clark County, Montana, USA
60.4km (37.6 miles) ⓘHub Camp Group, Ontario Mining District (Elliston Mining District), Powell County, Montana, USA
66.2km (41.1 miles) ⓘNellie Grant Mine, Clancy-Lump Gulch Mining District, Jefferson County, Montana, USA
76.7km (47.7 miles) ⓘBluestone Mine, Colorado Mining District (Prickly Pear Mining District; Corbin Mining District), Jefferson County, Montana, USA
References
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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