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
Lord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Cryptomelane
Formula:K(Mn74+Mn3+)O16
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cryptomelane data
Locality Data:Click here to view Lord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28471
Long-form Identifier:1:3:28471:8
GUID (UUID V4):0
Nearest other occurrences of Cryptomelane
16.8km (10.5 miles) ⓘBumpus Quarry, Albany, Oxford County, Maine, USA
19.6km (12.2 miles) ⓘSongo Pond Quarry (Kimball Ledge Quarry), Albany, Oxford County, Maine, USA
25.7km (16.0 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
39.9km (24.8 miles) ⓘDunton Gem Quarry, Newry, Oxford County, Maine, USA
40.0km (24.9 miles) ⓘCrooker Gem Pegmatite Quarries, Newry, Oxford County, Maine, USA
40.1km (24.9 miles) ⓘBell pit, Newry, Oxford County, Maine, USA
40.1km (24.9 miles) ⓘNevel Quarry, Newry, Oxford County, Maine, USA
45.2km (28.1 miles) ⓘMount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
54.9km (34.1 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
References
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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