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Aktinolite Ca2(Mg,Fe)5[OH|Si4O11]2 fragment of a crystal from Zöptau, Mähren, Czechoslovakia. |
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Aktinolite Ca2(Mg,Fe)5[OH|Si4O11]2 fibrous crystals from Johnston, Rhode Island, USA. |
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Aktinolite Ca2(Mg,Fe)5[OH|Si4O11]2 nephrite from New Zealand. |
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Aktinolite Ca2(Mg,Fe)5[OH|Si4O11]2 nephrite from Jordanow Slaski (former: Jordansmühl), Silesia, Poland. |
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Hornblende (Ca,Na)2(Mg,Fe,Al)5 [OH|Si4O11]2 basaltic hornblende from Eisenbühl, Bohemia, Czechoslovakia. |
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Hornblende Na2Mg3Al2[OH|Si4O11]2 glaucophane from Old Reef Farm, California, USA. |
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Hornblende (Ca,Na)2(Mg,Fe,Al)5 [OH|Si4O11]2 idiomorphic crystals from Bohemia, Czechoslovakia. |
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Hornblende Na2Fe4[OH|Si4O11]2 crocidolite from Griqualand, Oranje River, South Africa. |
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Hornblende Na2Fe4[OH|Si4O11]2 riebeckite from El Paso, Colorado, USA. |
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Hornblende Na2Fe4[OH|Si4O11]2 tiger's-eye from Australia. |
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Tremolite Ca2(Mg,Fe)5[OH|Si4O11]2 fibrous crystals from New York, USA. |
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Tremolite Ca2(Mg,Fe)5[OH|Si4O11]2 idiomorphic crystal from the Chewkee Co., North Carolina, USA. |
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