Drusa (Geoda)
Cuarzo is a mineral with formula SiO₂, in the Silicatos (Tectosilicatos) group. This specimen comes from Colección antigua de Francisco.
Description
Open geode lined with white drusy quartz. Porous brownish-yellow matrix.
Technical data
- Catalogue No.
- 0437
- Internal reference
- T0044
- Composition
- SiO₂
- Name
- Cuarzo
- Variety
- Drusa (Geoda)
- Group
- Silicatos (Tectosilicatos)
- Category
- Cavella
- Mine
- Colección antigua de Francisco
- Etymology
- From the German «Quarz», an old word of uncertain, probably Slavic, origin.
- Quality
- Buena
- Value trend
- Estable