| Locality type: | Quarry |
| Classification |
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| Species: | Montmorillonite |
| Formula: | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Comments: | Pocket clay that Schooner (1958) speculates is montmorillonite. David London's 2008 book "Pegmatites" points out that miarolitic pocket clays are poorly studied, but in at least the San Diego Co. area of California includes montmorillonite plus several other species. |
| Colour: | white (stained brown) |
| Confirmation |
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| Validity: | Unconfirmed/Questioned |
| Data |
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| Mineral Data: | Click here to view Montmorillonite data |
| Locality Data: | Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 131574 |
| Long-form Identifier: | 1:3:131574:5 |
| GUID (UUID V4): | ef1bd9a8-e68d-489b-a8f8-3dff62157a37 |
| Nearest other occurrences of Montmorillonite |
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| 13.0km (8.1 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 15.7km (9.8 miles) | ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 16.8km (10.5 miles) | ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA |
| 17.1km (10.6 miles) | ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA |
| 51.6km (32.1 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA |
| 60.9km (37.8 miles) | ⓘDiamond Hill (Ashaway Village), Ashaway, Hopkinton, Washington County, Rhode Island, USA |
| 80.9km (50.2 miles) | ⓘKent Iron Mine (Limonite mine), Kent, Litchfield County, Connecticut, USA |
| 81.4km (50.6 miles) | ⓘFillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
| 84.3km (52.4 miles) | ⓘBlandford mica mines, Blandford, Hampden County, Massachusetts, USA |
| 89.6km (55.7 miles) | ⓘLoudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire County, Massachusetts, USA |
| References |
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