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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Damourite from
Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Muscovite var: Damourite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Damourite data
Locality Data:Click here to view Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:35048
Long-form Identifier:1:3:35048:2
GUID (UUID V4):0
Nearest other occurrences of Damourite
0.8km (0.5 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
22.1km (13.8 miles) ⓘMount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
28.8km (17.9 miles) ⓘDunton Gem Quarry, Newry, Oxford County, Maine, USA
28.9km (17.9 miles) ⓘRed Hill quarries, Rumford, Oxford County, Maine, USA
29.0km (18.0 miles) ⓘCrooker Gem Pegmatite Quarries, Newry, Oxford County, Maine, USA
35.9km (22.3 miles) ⓘGreenlaw Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
58.9km (36.6 miles) ⓘBemis Stream prospect, D Township, Franklin County, Maine, USA
References
Kink, V. and Foord, E.E., 1992 Maine Mineralogy, Vol. 1, Maine Geologic Surevey, Augusta.
 
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