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Muscovite from
Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Comments:Scattered books of muscovite average 1 inch across by 1/2 inch thick.
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz5
Albite5
- var Cleavelandite1
Beryl2
Almandine2
Fluorapatite2
Elbaite2
Allanite-(Ce)2
Columbite-(Fe)1
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:37389
Long-form Identifier:1:3:37389:0
GUID (UUID V4):0
Nearest other occurrences of Muscovite
0.2km (0.1 miles) ⓘGotta-Walden Prospect, Portland, Middlesex County, Connecticut, USA
0.4km (0.2 miles) ⓘBordonaro Quarry, Portland, Middlesex County, Connecticut, USA
0.7km (0.5 miles) ⓘGotta-Wannerstrom Quarry, Portland, Middlesex County, Connecticut, USA
0.9km (0.6 miles) ⓘAppletree Lane, Portland, Middlesex County, Connecticut, USA
1.2km (0.7 miles) ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
1.4km (0.9 miles) ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA
1.5km (0.9 miles) ⓘCase Quarries, Portland, Middlesex County, Connecticut, USA
1.5km (0.9 miles) ⓘCase Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA
1.5km (0.9 miles) ⓘCase Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA
1.5km (1.0 miles) ⓘCase Prospect No. 4, Case Quarries, Portland, Middlesex County, Connecticut, USA
References
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
Barton and Goldsmith (1968)
Rocks & Minerals (1970) 45:443-449
 
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