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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Cryptomelane from
Dunton Gem Quarry, Newry, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Cryptomelane
Formula:K(Mn74+Mn3+)O16
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cryptomelane data
Locality Data:Click here to view Dunton Gem Quarry, Newry, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:520338
Long-form Identifier:1:3:520338:3
GUID (UUID V4):0
Nearest other occurrences of Cryptomelane
0.2km (0.1 miles) ⓘCrooker Gem Pegmatite Quarries, Newry, Oxford County, Maine, USA
0.2km (0.1 miles) ⓘBell pit, Newry, Oxford County, Maine, USA
0.3km (0.2 miles) ⓘNevel Quarry, Newry, Oxford County, Maine, USA
21.9km (13.6 miles) ⓘSongo Pond Quarry (Kimball Ledge Quarry), Albany, Oxford County, Maine, USA
26.1km (16.2 miles) ⓘBumpus Quarry, Albany, Oxford County, Maine, USA
29.6km (18.4 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
39.9km (24.8 miles) ⓘLord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
45.3km (28.2 miles) ⓘMount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
62.3km (38.7 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
References
King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.
 
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