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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Annite from
Griswold Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA


Locality type:Quarry
Classification
Species:Annite
Formula:KFe32+(AlSi3O10)(OH)2
Comments:Common pegmatite accessory, but listed in Table 1 of Betts (1999) with a question mark.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Annite data
Locality Data:Click here to view Griswold Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:763593
Long-form Identifier:1:3:763593:9
GUID (UUID V4):0
Nearest other occurrences of Annite
0.2km (0.1 miles) ⓘGas pipeline excavation, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.4km (0.2 miles) ⓘPegmatite prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.4km (0.2 miles) ⓘSimpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.4km (0.2 miles) ⓘHusband Quarries, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.4km (0.3 miles) ⓘHowe Quarry (Howe #1 Quarry; Huspband Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.4km (0.3 miles) ⓘEureka Quarries, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
0.6km (0.4 miles) ⓘHollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
1.3km (0.8 miles) ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA
1.3km (0.8 miles) ⓘJohn C. Wiarda Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
1.5km (0.9 miles) ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
References
Betts, John H. (1999) The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks & Minerals, 74 (2) 110-121 doi:10.1080/00357529909602524
 
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