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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Gummite from
Pelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA


Locality type:Mine
Classification
Species:'Gummite' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gummite data
Locality Data:Click here to view Pelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA
Data Identifiers
Mindat Occurrence Record ID:93007
Long-form Identifier:1:3:93007:5
GUID (UUID V4):0
Nearest other occurrences of Gummite
42.7km (26.6 miles) ⓘBlandford mica mines, Blandford, Hampden County, Massachusetts, USA
58.2km (36.2 miles) ⓘRollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA
82.1km (51.0 miles) ⓘBig Mine, Alstead, Cheshire County, New Hampshire, USA
86.0km (53.4 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
88.7km (55.1 miles) ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA
92.3km (57.4 miles) ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA
94.8km (58.9 miles) ⓘRock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
References
Emerson, B.K. (1917) Geology of Massachusetts and Rhode Island. Bulletin 597. US Geological Survey doi:10.3133/b597 pp.216-217
 
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