Locality type: | Quarry |
Classification |
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Species: | Montmorillonite |
Formula: | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Comments: | encrustations on pegmatite (Zodac 1941) |
Colour: | brownish |
Abundance at site: | Common |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Montmorillonite data |
Locality Data: | Click here to view Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 96322 |
Long-form Identifier: | 1:3:96322:2 |
GUID (UUID V4): | ca70312f-405a-43a0-9dd2-05e7a40f7769 |
Nearest other occurrences of Montmorillonite |
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0.3km (0.2 miles) | ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA |
1.2km (0.7 miles) | ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
4.1km (2.6 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
16.8km (10.5 miles) | ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
39.8km (24.7 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA |
67.5km (41.9 miles) | ⓘBlandford mica mines, Blandford, Hampden County, Massachusetts, USA |
70.9km (44.1 miles) | ⓘKent Iron Mine (Limonite mine), Kent, Litchfield County, Connecticut, USA |
71.3km (44.3 miles) | ⓘDiamond Hill (Ashaway Village), Ashaway, Hopkinton, Washington County, Rhode Island, USA |
73.3km (45.6 miles) | ⓘLoudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire County, Massachusetts, USA |
80.8km (50.2 miles) | ⓘFillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
References |
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