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Iddingsite
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| Mineral: | Iddingsite: MgO.Fe2O3.3SiO2ยท4(H2O) | ||||
| Comments: | Red iddingsite with green olivine. Iddingsite alteration of olivine commonly seen in thin-sections is actually a fine-grained mixture of goethite+quartz+chlorite. | ||||
| Location: | Amboy, San Bernadino County, California, USA. | ||||
| Scale: | Specimen Size 5x5x3 cm. | ||||
| Copyright: | © John Betts - Fine Minerals | ||||
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