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
Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:'Microlite Group' (not an IMA approved species)
Formula:A2-mTa2X6-wZ1-n
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Schorl1
Microcline1
Albite1
Data
Mineral Data:Click here to view Microlite Group data
Locality Data:Click here to view Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:662153
Long-form Identifier:1:3:662153:7
GUID (UUID V4):0
Nearest other occurrences of Microlite Group
1.0km (0.6 miles) ⓘSimpson prospect #1, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
1.2km (0.7 miles) ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA
1.2km (0.7 miles) ⓘHowe Quarry (Howe #1 Quarry; Huspband Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
1.3km (0.8 miles) ⓘSimpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
1.7km (1.1 miles) ⓘHollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
3.0km (1.9 miles) ⓘChamberlain Lane, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
4.1km (2.6 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
4.9km (3.1 miles) ⓘHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA
7.5km (4.6 miles) ⓘBrack Gem prospect (Brack prospect), East Glastonbury, Glastonbury, Hartford County, Connecticut, USA
8.0km (4.9 miles) ⓘRiverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
References
King, Van (n.d.) Personal communcation.
 
and/or  
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