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
Maine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA


Locality type:Quarry
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 Maine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:658233
Long-form Identifier:1:3:658233:3
GUID (UUID V4):0
Nearest other occurrences of Gummite
27.0km (16.8 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
35.3km (21.9 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
41.1km (25.5 miles) ⓘWardwell Quarry (Pechnic Quarry), Albany, Oxford County, Maine, USA
54.5km (33.9 miles) ⓘConsolidated Feldspar Quarries, Georgetown, Sagadahoc County, Maine, USA
58.1km (36.1 miles) ⓘRed Hill quarries, Rumford, Oxford County, Maine, USA
61.1km (38.0 miles) ⓘDunton Gem Quarry, Newry, Oxford County, Maine, USA
62.1km (38.6 miles) ⓘBlack Mountain Quarry, Rumford, Oxford County, Maine, USA
References
Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445
 
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