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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Allanite Group from
Joshua Rock Quarry, Lyme, New London County, Connecticut, USA


Locality type:Quarry
Classification
Species:'Allanite Group' (not an IMA approved species)
Formula:(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Allanite Group data
Locality Data:Click here to view Joshua Rock Quarry, Lyme, New London County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720266
Long-form Identifier:1:3:720266:7
GUID (UUID V4):0
Nearest other occurrences of Allanite Group
14.8km (9.2 miles) ⓘArnold Granite Quarry (General Brainerd Quarry; Great Hill Quarry; Hazelton Quarry; Haddam Quarry; Brookes Quarry), Haddam, Middlesex County, Connecticut, USA
15.8km (9.8 miles) ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
19.9km (12.4 miles) ⓘGoos Quarry, Waterford, New London County, Connecticut, USA
28.8km (17.9 miles) ⓘHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA
34.1km (21.2 miles) ⓘSimpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
34.1km (21.2 miles) ⓘMasons Island Quarry, Stonington, New London County, Connecticut, USA
34.2km (21.2 miles) ⓘHollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
34.3km (21.3 miles) ⓘHowe Quarry (Howe #1 Quarry; Huspband Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
34.7km (21.6 miles) ⓘHusband Quarries, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
44.3km (27.5 miles) ⓘMansfield Hollow Dam, Windham, Windham County, Connecticut, USA
References
Dale, T. Nelson; Gregory Herbert E. (1911) The granites of Connecticut. Bulletin 484. US Geological Survey doi:10.3133/b484
 
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