Provenite

Minas Gerais

RegionDraft data

18.5000° S, 44.5000° W · Region only

Quartz from Minas Gerais, Brazil, with photos of specimens from this locality.

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Minerals found here

Quartz

Quartz at Minas Gerais

Large quartz specimen combining prismatic and tabular crystals with Japan-law twins and phantoms (specimen from Minas Gerais, Brazil).
Large quartz specimen combining prismatic and tabular crystals with Japan-law twins and phantoms (specimen from Minas Gerais, Brazil).
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
SiO₂
Morphology
Prismatic crystals together with thin tabular crystals in about equal amounts; most tabular crystals contain clear phantoms
Typical size
Photographed specimen about 15 cm across
Twins
Japan-law twins

Sources: SRC-179 SRC-180

About Quartz →

Geology of the locality

Region
Minas Gerais
Country
Brazil

Photo PHOTO-009 gives only 'Minas Gerais'. The existing region row has no coordinates; the values here are an approximate geographic centre of the state taken from general knowledge, NOT from an opened page, so verify before use. For reference, Japan-law quartz twins are shown at Diamantina in this state by a seller listing.

Sources: SRC-115

Sources

  1. SRC-115 · Website
    Conselheiro PenaWikipedia
  2. SRC-179 · Website
    File:Quartz-114504.jpg (Wikimedia Commons; quartz with Japan-law twins, Minas Gerais)Robert M. Lavinsky · 2010 · Wikimedia Commons
  3. SRC-180 · Website
    Japan law twin Quartz from Brazil, Minas Gerais, DiamantinaEarthWonders (seller) · earthwonders.com

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.