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Quartz vein outcrop, St David's Head, Pembrokeshire (Dyfed), Wales, UK

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List of minerals arranged by Dana 8th Edition classification

Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite	72.1.3.1	Ca₂Al₂Si₃O₁₂(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
Quartz	75.1.3.1	SiO₂

2 entries listed. 2 valid minerals.

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