| Classification |
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| Species: | Cummingtonite |
| Formula: | ◻Mg2Mg5(Si8O22)(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Cummingtonite data |
| Locality Data: | Click here to view King of the West (North Star), Rochford Mining District, Pennington County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 383902 |
| Long-form Identifier: | 1:3:383902:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Cummingtonite |
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| 2.4km (1.5 miles) | ⓘGolden West Mine (Benedict Property), Rochford Mining District, Pennington County, South Dakota, USA |
| 4.3km (2.7 miles) | ⓘMary Belle Mine, Rochford Mining District, Pennington County, South Dakota, USA |
| 5.5km (3.4 miles) | ⓘMontezuma Mine (Montezuma Nos. 3 to 7; Red Jim; New Montezuma), Rochford Mining District, Pennington County, South Dakota, USA |
| 5.7km (3.5 miles) | ⓘStandby mine, Rochford Mining District, Pennington County, South Dakota, USA |
| 7.0km (4.3 miles) | ⓘGold King Mine (Gordelia Mine), Rochford Mining District, Pennington County, South Dakota, USA |
| 7.3km (4.5 miles) | ⓘMontana Mine, Rochford Mining District, Lawrence County, South Dakota, USA |
| 10.7km (6.7 miles) | ⓘBlack Eagle Mine (Blair Group), Rochford Mining District, Pennington County, South Dakota, USA |
| 28.7km (17.9 miles) | ⓘHomestake Mine, Lead, Lead Mining District, Lawrence County, South Dakota, USA |
| 40.5km (25.2 miles) | ⓘNewark Group, Unorganized mining district [1], Custer County, South Dakota, USA |
| References |
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