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Robins quarry, Robins, Linn Co., Iowa, USA
Detailed Mineral List:
| Calcite | ||
| Formula: | CaCO3 | |
| Reference: | R&M 77:6 pp 404-413 | |
| Marcasite | ||
| Formula: | FeS2 | |
| Reference: | R&M 77:6 pp 404-413 | |
| Pyrite | ||
| Formula: | FeS2 | |
| Reference: | R&M 77:6 pp 404-413 | |
| Quartz | ||
| Formula: | SiO2 | |
| Reference: | R&M 77:6 pp 404-413 | |
4 entries listed. 4 valid minerals.
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