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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Bertrandite from
Consolidated Feldspar Quarries, Georgetown, Sagadahoc County, Maine, USA


Locality type:Quarry
Classification
Species:Bertrandite
Formula:Be4(Si2O7)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bertrandite data
Locality Data:Click here to view Consolidated Feldspar Quarries, Georgetown, Sagadahoc County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:32935
Long-form Identifier:1:3:32935:8
GUID (UUID V4):0
Nearest other occurrences of Bertrandite
23.5km (14.6 miles) ⓘStandpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
25.2km (15.7 miles) ⓘFisher Quarry, Topsham, Sagadahoc County, Maine, USA
53.9km (33.5 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
54.5km (33.9 miles) ⓘGreenlaw Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
54.5km (33.9 miles) ⓘMaine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
55.3km (34.4 miles) ⓘKeith Quarry (Towne Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
55.4km (34.4 miles) ⓘPulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
55.5km (34.5 miles) ⓘWade Quarry (Androscoggin Tourmaline prospect), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
72.3km (44.9 miles) ⓘMount Marie Quarries, Paris, Oxford County, Maine, USA
78.1km (48.5 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
References
 
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