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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Columbite-(Fe) from
Trenton Quarry, Topsham, Sagadahoc County, Maine, USA


Locality type:Quarry
Classification
Species:Columbite-(Fe)
Formula:Fe2+Nb2O6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Columbite-(Fe) data
Locality Data:Click here to view Trenton Quarry, Topsham, Sagadahoc County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:514461
Long-form Identifier:1:3:514461:7
GUID (UUID V4):0
Nearest other occurrences of Columbite-(Fe)
1.1km (0.7 miles) ⓘWilliam Willes #1 Quarry, Topsham, Sagadahoc County, Maine, USA
1.5km (0.9 miles) ⓘStaples Quarry, Topsham, Sagadahoc County, Maine, USA
1.8km (1.1 miles) ⓘFisher Quarry, Topsham, Sagadahoc County, Maine, USA
2.9km (1.8 miles) ⓘSwamp #1 Quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
2.9km (1.8 miles) ⓘSwamp #2 quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
3.1km (2.0 miles) ⓘConsolidated #2 Quarry (Purington Quarry), Highland Green, Topsham, Sagadahoc County, Maine, USA
3.2km (2.0 miles) ⓘConsolidated #1 Quarry, Highland Green, Topsham, Sagadahoc County, Maine, USA
3.5km (2.2 miles) ⓘBooker West Quarry, Bowdoin, Sagadahoc County, Maine, USA
4.1km (2.5 miles) ⓘMount Ararat Quarries, Topsham, Sagadahoc County, Maine, USA
4.2km (2.6 miles) ⓘMetcalf Quarry, Mount Ararat Quarries, Topsham, Sagadahoc County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey.
 
and/or  
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