| Classification |
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| Species: | Orthoclase |
| Formula: | K(AlSi3O8) |
| Confirmation |
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| Validity: | Believed Valid |
| References |
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| References: | U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| Data |
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| Mineral Data: | Click here to view Orthoclase data |
| Locality Data: | Click here to view Unknown Mine (MRDS - 10010570), Antelope Springs District, Millard Co., Utah, USA |
| Nearest other occurrences of Orthoclase |
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| 23.8km (14.8 miles) | | ⓘMiller Mine, Granite Mining District (North Granite Mining District), Mineral Mts (Mineral Range), Beaver Co., Utah, USA |
| 29.2km (18.1 miles) | | ⓘOK Mine (Milford Pit), Beaver Lake Mining District, Beaver Lake Mts, Beaver Co., Utah, USA |
| 43.9km (27.3 miles) | | ⓘImperial Mine, San Francisco Mining District (Frisco Mining District), San Francisco Mts, Beaver Co., Utah, USA |
| 85.5km (53.1 miles) | | ⓘNotch Peak District, House Range, Millard Co., Utah, USA |
| 87.3km (54.3 miles) | | ⓘPainter Spring, House Range, Millard Co., Utah, USA |