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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Microcline from
Municipal Quarry, Portland, Cumberland County, Maine, USA


Locality type:Quarry
Classification
Species:Microcline
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Microcline data
Locality Data:Click here to view Municipal Quarry, Portland, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:538377
Long-form Identifier:1:3:538377:1
GUID (UUID V4):0
Nearest other occurrences of Microcline
18.9km (11.8 miles) ⓘWolfe's Neck locality, Freeport, Cumberland County, Maine, USA
20.8km (13.0 miles) ⓘPorter Landing prospects, Freeport, Cumberland County, Maine, USA
23.5km (14.6 miles) ⓘBradbury Mountain State Park locality, Pownal, Cumberland County, Maine, USA
24.5km (15.3 miles) ⓘTryon Mountain Quarries, Pownal, Cumberland County, Maine, USA
25.1km (15.6 miles) ⓘOak Hill area, Standish, Cumberland County, Maine, USA
27.3km (17.0 miles) ⓘLaChance Quarry, Brunswick, Cumberland County, Maine, USA
33.5km (20.8 miles) ⓘRussell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
33.5km (20.8 miles) ⓘNorth Russell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
33.7km (20.9 miles) ⓘYedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
33.8km (21.0 miles) ⓘStandpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
 
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