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Hopin #1 mine, Amboy, San Bernardino Co., California, USA

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List of minerals arranged by Dana 8th Edition classification
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Sepiolite74.3.1b.1Mg4(Si6O15)(OH)2 · 6H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si

2 entries listed. 2 valid minerals.
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