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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Pyrrhotite from
Great Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA


Locality type:Mine
Classification
Species:Pyrrhotite
Formula:Fe1-xS
Comments:"Pyrrhotite and loellingite constitute the bulk of the ore minerals [at Shepard's Lode]..."Pyrrhotite, locally altered to pyrite, is the only other sulfide present in abundance [in the gold-bearing lodes]. Native gold, generally as micron sized grains, is found, along with pyrite and chalcopyrite, in a network of thin fractures and veins cutting the arsenopyrite." Gray (2005)
Habit:grains
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrrhotite data
Locality Data:Click here to view Great Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:102013
Long-form Identifier:1:3:102013:7
GUID (UUID V4):0
Nearest other occurrences of Pyrrhotite
0.4km (0.2 miles) ⓘState Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA
3.8km (2.4 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
5.6km (3.5 miles) ⓘLinkpot cut, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
5.6km (3.5 miles) ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA
7.0km (4.3 miles) ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
7.1km (4.4 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
7.2km (4.5 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
7.2km (4.5 miles) ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA
8.3km (5.1 miles) ⓘSlocum prospect, East Hampton, Middlesex County, Connecticut, USA
10.0km (6.2 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
References
Gray (2005)
 
and/or  
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