Serra dos Cristais
16.6167° S, 47.6167° W · ± 10 km
Quartz from Goiás, Brazil, with photos of specimens from this locality.
Minerals found here
Quartz at Serra dos Cristais
The Cristalina district is known for large, high-clarity rock crystal that is generally sold untreated.
- Formula
- SiO₂
- Morphology
- Quartz with its rock crystal, smoky quartz and citrine varieties recorded; crystal form not described
- Typical size
- Single crystals of several kilograms are not unusual (district-level statement)
- Color / luster
- Rock crystal, smoky quartz and citrine varieties recorded
- Availability
- Commonly available
- History
- Cristalina mining grew in the mid-20th century to supply piezoelectric quartz for oscillators and military communications; after synthetic quartz replaced it from the 1970s the trade shifted to gem and ornamental use.
Geology of the locality
- Setting
- Mountain in Cristalina municipality, Goiás
- Type
- Sedimentary
- Host rock
- Quartzite and phyllite
- Region
- Goiás
- Country
- Brazil
Peak about 17 km from Cristalina town. Coordinates converted from degrees-minutes on the Mindat locality page, which has no description and gives only minute-level precision.
Sources: SRC-095
Sources
- SRC-095 · Database
Serra dos Cristais, Cristalina, Goias, BrazilMindat.org - SRC-096 · Website
Cristalina (encyclopedia page)Skyjems
Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.