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
Tamminen Quarry, Greenwood, Oxford 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 Tamminen Quarry, Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28422
Long-form Identifier:1:3:28422:2
GUID (UUID V4):0
Nearest other occurrences of Bertrandite
0.1km (0.1 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
0.8km (0.5 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
0.8km (0.5 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
1.1km (0.7 miles) ⓘOutback prospect (Gross prospect), Greenwood, Oxford County, Maine, USA
1.2km (0.8 miles) ⓘHayes Ledge Quarries (East and West), Greenwood, Oxford County, Maine, USA
2.0km (1.2 miles) ⓘB.B. No. 7 Quarry, Norway, Oxford County, Maine, USA
3.7km (2.3 miles) ⓘOhtonen Quarry, Greenwood, Oxford County, Maine, USA
6.2km (3.9 miles) ⓘEmmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
6.5km (4.0 miles) ⓘSki Pike Quarry, West Paris, Oxford County, Maine, USA
7.1km (4.4 miles) ⓘTiger Bill Quarries, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
References
Mineral News (1993) 9:2 p. 8
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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