Mindat Logo

Smoky Quartz

This page kindly sponsored by Cash for Gold Las Vegas



Formula:
SiO
 
2
Colour:gray, brown, black
A variety of Quartz

Smoky-gray, brown to black quartz colored by Aluminum-based and irradiation-induced color centers.
The name Morion is used for black smoky quartz.


Dichroism in Smoky Quartz

Smoky quartz is dichroic (from darker yellow-brown to lighter red-brown) when viewed in polarized light. The photo to the left shows the change of color in a smoky quartz crystal that is rotated in front of a LCD display that serves as a source of polarized light.


Black quartz crystals in anhydrite from Camporanda, Tuscany, Italy. These are not smoky quartz
Note: Very often black or brown crystals that are colored by inclusions of minerals or organic matter are erroneously called "smoky quartz" or "morion". Typical examples of such misnomers are black quartz crystals embedded in sedimentary rocks, as those found in gypsum, anhydrite and limestone in Italy and Spain.


Visit gemdat.org for gemological information about Smoky Quartz. Currently in public beta-test.

Classification of Smoky Quartz

mindat.org URL:http://www.mindat.org/min-3689.html
Please feel free to link to this page.

Physical Properties of Smoky Quartz

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:gray, brown, black
Comment:dichroic: darker yellow-brown to lighter red-brown

Chemical Properties of Smoky Quartz

Formula:
SiO
 
2
Simplified for copy/paste:SiO2
Essential elements:O, Si
All elements listed in formula:O, Si

Other Names for Smoky Quartz

Synonyms:
CairngormCairngorum StoneColorado DiamondOuro Verde QuartzQuarzo affumicato
Radium DiamondSmokey QuartzSmoky CitrineSmoky Topaz
Other Languages:
Danish:Morion
Dutch:Rookkwarts
Estonian:Moorion
French:Quartz fumée
German:Morion
Rauchquarz
Rauchtopas
Italian:Morione
Latvian:Morions
Lithuanian:Morionas
Norwegian (Bokmål):Røykkvarts
Polish:Morion
Portuguese:Quartzo morion
Russian:Морион
Simplified Chinese:烟水晶
烟晶
烟石英
茶晶
茶水晶
Slovak:Morión
Spanish:Morion
Swedish:Rökkvarts
Traditional Chinese:煙水晶
煙晶
煙石英
茶晶
茶水晶

Other Information

Health Warning:Quartz is usually quite harmless unless broken or powdered. Broken crystals and masses may have razor-sharp edges that can easily cut skin and flesh. Handle with care. Do not grind dry since long-term exposure to finely ground powder may lead to silicosis.

References for Smoky Quartz

Reference List:

- +
Marshall, Royal R. (1955): Absorption spectra of smoky quartz from an Arkansas vein deposit and from a Sierran miarolitic granite. Am. Min.: 40: 535-537.

Chudoba, K. F. (1962): Some relations between the causes of amethyst, smoky quartz, and citrine colors as given by modern science. Mineralogicheskii Sbornik (Lvov), (16), 91-105.

Cohen, Alvin J. (1989): New data on the cause of smoky and amethystine color in quartz. Mineralogical Record 20, 365-367.

Internet Links for Smoky Quartz

Search Engines:
  • Look for Smoky Quartz on Google
  • Look for Smoky Quartz images on Google
  • Mineral Dealers:
  • High-end worldwide specimens & outstanding customer service
  • Find Smoky Quartz on www.crystalclassics.co.uk
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fine and rare minerals from mintreasure.com
  • SpiriferMinerals.com - high quality low prices
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Fine minerals from bisbeeborn.com
  • Buy RARE Minerals from Rocks of Africa
  • Buy fine minerals and gemstones from Pala International
  • Buy from McDougall Minerals
  • Buy minerals from YourMineralCollection
  • Buy from David K Joyce minerals
  • Specimens:The following Smoky Quartz specimens are currently listed for sale on minfind.com.

    Localities for Smoky Quartz

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    矿物 and/or 产地  
    谷歌搜索  
    版权所有© Jolyon Ralph 和周兰怡 1993年至2014年 网站地图 产地,矿物及照片的数据是有獨立各別的版权。欲求更多信息,请联系本站长 网站托管和开发 Jolyon Ralph。 Mindat.org是一个致力于免费提供所有有関於矿物学上所有信息資源的网站。 Mindat資訊是依靠全球成千過萬的成员和支持者的贡献。 Mindat不設提供矿物、岩石等物品出售。 如果阁下想參与提供添加有関矿物資訊或提高本数据库质量,請点击这里进行注册。.
    Current server date and time: 2014.9.30 00:54:55
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds