Earth and Environment Atlas

How The Planet Works
Sign In
Text size
100%
Theme

Switch Atlas

Material

Topaz

Silicate Minerals

A silicate mineral of aluminum and fluorine used as a gemstone, colorless in its natural state but turned pale blue, golden brown or yellow orange by trace impurities and routinely treated with heat or radiation for deeper colors. It is one of the hardest naturally occurring minerals and defines value 8 on the Mohs hardness scale. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Kind
Mineral 1
Formation Class
Nesosilicate, forming in granitic pegmatites, rhyolite gas cavities and high-temperature hydrothermal veins. 1
Chemical Formula
Al2SiO4(F,OH)2 1
Hardness (Mohs)
8 1
The defining mineral for 8 on the Mohs scale; its own reference article states this in the infobox rather than in prose.
Classification
Crystal System
Orthorhombic 1
Classification
Silicate Mineral 1
Use
Gemstone 1
Connections

Associated With

Mohs Hardness Scale, Concepts

Topaz is the defining mineral for 8 on the Mohs scale.

Source Topaz (Wikipedia)
Pegmatite, Materials

Topaz named among the characteristic minerals of complex (rare-element) pegmatites.

Source Pegmatite (Wikipedia)

Classified As

Silicate Minerals, Subcategories

Crystallizes In System

Orthorhombic Crystal System, Concepts

In Discipline

Mineralogy, Disciplines
Source Topaz (Wikipedia)
In the Other Atlases

Mineral Species Of

Yellow Topaz

Also in Divinity Atlas: of this mineral species.

Found In

Australia

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Brazil

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Most of the world's imperial topaz is found in Brazil.
India

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Madagascar

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Mexico

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Myanmar

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Namibia

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Nigeria

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Much topaz has been produced from placer deposits in Brazil and Nigeria
Russia

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Zimbabwe

Also in Geography Atlas: where this subject is found.

Source Geology.com: Topaz gemstone and mineralArticle text
Quote, Article text
Other sources of topaz include: Australia , India , Madagascar , Mexico , Myanmar , Namibia , Nigeria , Russia , and Zimbabwe
Sources
1. Topaz (Wikipedia)
Wikimedia Foundation
  • Lead section
    Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al2SiO4(F, OH)2. It is used as a gemstone in jewelry and other adornments.
  • Lead section
    Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al2SiO4(F, OH)2.
  • Topaz (Wikipedia), body text
    It has the orthorhombic crystal system and a dipyramidial crystal class
View the Source
Wikidata: Topaz
Wikidata Q134985
Pegmatite (Wikipedia)
Wikimedia FoundationAssociated With: Pegmatite, Complex pegmatite mineralogy section
Quote, Associated With: Pegmatite, Complex pegmatite mineralogy section
These complex pegmatites contain unusual minerals of these elements, such as beryl, spodumene, lepidolite, amblygonite, topaz, apatite, fluorite, tourmaline.
View the Source
Comments (0)
No comments yet. Be the first to share a thought.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.