| Locality type: | Peak |
| Classification |
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| Species: | Nepheline |
| Formula: | Na3K(Al4Si4O16) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Nepheline data |
| Locality Data: | Click here to view Spearfish Peak (Black Butte), Spearfish, Lawrence County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 214778 |
| Long-form Identifier: | 1:3:214778:9 |
| GUID (UUID V4): | c5c37622-ce75-428f-a52a-5b71935e44d0 |
| Nearest other occurrences of Nepheline |
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| 47.5km (29.5 miles) | ⓘBull Hill nepheline-syenite deposit, Bear Lodge alkaline igneous complex, Crook County, Wyoming, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | A CONTRIBUTION TO THE GEOLOGY OF THE NORTHERN BLACK HILLS. JOHN DUERIRVING. ( R u d Much 10, rw.).............31s I. INTRODUCTION. The Black Hills of South Dakota, as has been so well set forth by Newton...border of the state of South Dakota, but extending also into Wyoming. See Fig. 5. BLACK HILLS GEOLOGY. 180...mountains, the highest point of which is Warren’s Peak. These constitute an uplift which is distinct both...schists with associated granites just as in the Harney Peak region of the southern hills. Around the small Algonkian |
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