| Locality type: | Quarry |
| Classification |
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| Species: | Feldspar Group var: Perthite |
| Comments: | see details under "microcline" |
| Confirmation |
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| Validity: | Believed Valid |
| References |
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| References: | Cameron, Eugene N., David M. Larrabee, Andrew H. McNair, James T. Page, Glenn W. Stewart, and Vincent E. Shainin. (1954): Pegmatite Investigations 1942-45 New England. USGS Professional Paper 255. |
| Data |
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| Mineral Data: | Click here to view Perthite data |
| Locality Data: | Click here to view State Forest Quarry No. 1 (State Forest #1 Quarry; Clark Hill Quarry), East Hampton (Chatham), Middlesex Co., Connecticut, USA |
| Nearest other occurrences of Perthite |
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| 4.6km (2.9 miles) | | A ⓘCase Quarries, Portland, Middlesex Co., Connecticut, USA |
| 6.6km (4.1 miles) | | B ⓘRiverside Quarry (Western Quarry), White Rock District (White Rocks District), Middletown, Middlesex Co., Connecticut, USA |
| 9.0km (5.6 miles) | | C ⓘAnderson No. 2 Mica Mine, East Hampton (Chatham), Middlesex Co., Connecticut, USA |
| 9.0km (5.6 miles) | | D ⓘBailey prospect, East Hampton (Chatham), Middlesex Co., Connecticut, USA |
| 12.0km (7.5 miles) | | E ⓘBlumenthal prospect, Glastonbury, Hartford Co., Connecticut, USA |
| 43.9km (27.3 miles) | | F ⓘKnapp Prospect, Canton, Hartford Co., Connecticut, USA |
| 55.2km (34.3 miles) | | G ⓘCurtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven Co., Connecticut, USA |
| 83.3km (51.8 miles) | | H ⓘWest Kingston, South Kingstown, Washington Co., Rhode Island, USA |
| 88.0km (54.7 miles) | | I ⓘSmithfield beryl prospect, Smithfield, Providence Co., Rhode Island, USA |
| 103.9km (64.6 miles) | | J ⓘGrants Mills, Cumberland, Providence Co., Rhode Island, USA |
| 104.2km (64.8 miles) | | K ⓘMilford, Worcester Co., Massachusetts, USA |
| 107.1km (66.5 miles) | | L ⓘBristol Ferry, Bristol, Bristol Co., Rhode Island, USA |
| 117.6km (73.0 miles) | | M ⓘBeattie & Wilcox Quarry, Fall River, Bristol Co., Massachusetts, USA |
| 123.8km (76.9 miles) | | N ⓘRoyalston, Worcester Co., Massachusetts, USA |
| 124.9km (77.6 miles) | | O ⓘRollstone Hill Quarry, Fitchburg, Worcester Co., Massachusetts, USA |
| 128.6km (79.9 miles) | | P ⓘRattlesnake Hill, Sharon, Norfolk Co., Massachusetts, USA |
| 136.7km (84.9 miles) | | Q ⓘFort Point, Fairhaven, Bristol Co., Massachusetts, USA |
| 162.6km (101.0 miles) | | R ⓘKallenberg Quarry (Robin Rock Quarry), Lynnfield, Essex Co., Massachusetts, USA |
| 166.0km (103.2 miles) | | S ⓘBlister Mine, Alstead, Cheshire Co., New Hampshire, USA |
| 170.1km (105.7 miles) | | T ⓘDavidson Farm pegmatite, Alstead, Cheshire Co., New Hampshire, USA |
| 170.2km (105.8 miles) | | U ⓘSalem, Essex Co., Massachusetts, USA |
| 173.4km (107.7 miles) | | V ⓘAlstead, Cheshire Co., New Hampshire, USA |
| 174.8km (108.6 miles) | | W ⓘConey Island, Salem, Essex Co., Massachusetts, USA |
| 181.6km (112.8 miles) | | X ⓘAcworth, Sullivan Co., New Hampshire, USA |
| 192.1km (119.4 miles) | | Y ⓘGloucester, Essex Co., Massachusetts, USA |
| 197.5km (122.7 miles) | | Z ⓘGeorge Frank Smith Quarry (G. F. Smith Quarry), Newport, Sullivan Co., New Hampshire, USA |
| 205.7km (127.8 miles) | | 0 ⓘAscutney Mountain complex, Windsor Co., Vermont, USA |
| 212.3km (131.9 miles) | | 1 ⓘCuttingsville, Shrewsbury, Rutland Co., Vermont, USA |
| 226.4km (140.7 miles) | | 2 ⓘRuggles Mine, Grafton, Grafton Co., New Hampshire, USA |