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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Microlite Group from
Berry-Havey Quarry, Poland, Androscoggin County, Maine, USA


Locality type:Quarry
Classification
Species:'Microlite Group' (not an IMA approved species)
Formula:A2-mTa2X6-wZ1-n
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Microlite Group data
Locality Data:Click here to view Berry-Havey Quarry, Poland, Androscoggin County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:30284
Long-form Identifier:1:3:30284:7
GUID (UUID V4):0
Nearest other occurrences of Microlite Group
1.9km (1.2 miles) ⓘMaine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
2.0km (1.2 miles) ⓘPulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
2.0km (1.3 miles) ⓘGreenlaw Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
19.5km (12.1 miles) ⓘMount Marie Quarries, Paris, Oxford County, Maine, USA
26.0km (16.2 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
26.6km (16.6 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
29.3km (18.2 miles) ⓘLaChance Quarry, Brunswick, Cumberland County, Maine, USA
30.6km (19.0 miles) ⓘFisher Quarry, Topsham, Sagadahoc County, Maine, USA
36.6km (22.8 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
54.9km (34.1 miles) ⓘLord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
Jeffrey Morrison, William Simmons, Alexander Falster, Encar Roda Robles (2018) The Havey gem tourmaline pegmatite, Poland, Androscoggin County, Maine – an example of highly efficient chemical fractionation. XXII International Mineralogical Association Meeting, Melbourne, Australia. https://www.researchgate.net/publication/327286045_The_Havey_Gem_Tourmaline_Pegmatite_Poland_Androscoggin_Co_Maine_-_an_example_of_highly_efficient_chemical_fractionation
 
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