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thorutite, Quartz - Brumado, Bahia, Brazil

Photo by Carlos Cornejo

thorutite, Quartz

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Black thorutite spherules to 2 mm in diameter on a quartz crystal, 3.1 cm, from the Pedra Preta mine, Brumado. Reynaldo Contreira collection; Carlos Cornejo photo.

Product details

SpeciesQuartz

SizeMiniature

Dimensions3.1 cm

Added on03/26/2026

LocalityBrazil, Bahia, Brumado

Publications

Mineralogical Record 57 2 page 252

Current owner

Reynaldo Contreira

Added by the community · Not a registered member

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Mineral guide

Learn about Quartz

a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.

Regional guide

Quartz from Brumado

Locality guide

Brumado

Brumado, Brazil — renowned magnesite district in Serra das Éguas, yielding glassy magnesite rhombs and tourmalines; a key collector locality with rare minerals.

Quartz

$480Median

3507Sold (12 mo)

$80Last sale

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