Cuarzo
Cuarzo is a mineral with formula SiO₂, in the Óxidos group. This specimen comes from Rutilated Quartz Localities, Remedios, Novo Horizonte, Bahía, Brasil and joined the Terrium collection in 2026.
Description
Large quartz prism with rutile and hematite inclusions.
About Cuarzo
A chemically austere paragenesis, the product of a hydrothermal system with low elemental diversity, in which iron, titanium and silicon crystallise independently, linked only to oxygen.
About the locality
An industrial region to the point of depredation yet generous to collectors, with extreme varietal diversity sustained for centuries. A productive rara avis: a district is usually either very diverse but mediocre, or very good but very limited. Minas Gerais is both at once. Perhaps its name is a hint.
Technical data
- Catalogue No.
- 0375
- Composition
- SiO₂
- Name
- Cuarzo
- Group
- Óxidos
- Category
- Meritum Persé
- Associations
- rutilo, hematites
- Mine
- Rutilated Quartz Localities
- District / Municipality
- Remedios
- Province
- Novo Horizonte
- Region
- Bahía
- Country
- Brasil
- Acquired
- 2026
- Etymology
- From the Greek "malakhē" ('mallow'), for its green colour.
- Quality
- Buena
- Value trend
- Estable
Related specimens
- Ágatha — Brasil
- Anatasa — Pakistan
- Armalcolita — España
- Becquerelita — República Democrática del Congo (ex-Zaire)
- Brookita — Pakistán
- Calcofanita — España
- Cianita — Brasil
- Cianita (Negra) — Brasil