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Opal
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| Mineral: | Opal: SiO2·n(H2O) | |||||
| Comments: | Colorful white opal on a sandstone matrix. | |||||
| Location: | Queensland, Australia. | |||||
| Scale: | 9 x 6 x 3 cm. | |||||
| Copyright: | © Isaias Casanova / IC Minerals | |||||
| Counter: | This Image has been shown 18491 times | |||||
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