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Aventurine

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Formula:
SiO2
Name:
From Italian "a ventura", meaning by chance (Aventurine glass, i.e. glass with small colouring copper inclusions, was first prepared accidentally in the early 18th century in Italy).
A variety of Quartz

A variety of quartz containing glistening fragments (usually mica, such as fuchsite, but also hematite), which can be cut and polished as a gemstone. Most commonly when the general public encounter this stone it is in the form of green stone beads that can be anywhere from a pale to a medium green colour. Frequently these beads have been treated with oil to make the stone look a darker colour than it would naturally or even dyed to make the colour more attractive. Aventurine can also be other colours but the most common colour is green. Aventurine is a general term that is used by different commercial interests to mean several different kinds of stones (compare Aventurine Feldspar).

Not to be confused with Aventurine glass or goldstone, a synthetic reddish (due to copper inclusions) or greenish (due to chromium) glass used as a "gem" material.

Visit gemdat.org for gemological information about Aventurine.


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Chemical Properties of AventurineHide

Formula:
SiO2

Synonyms of AventurineHide

Other Language Names for AventurineHide

Czech:Aventurin
French:Aventurine
Latvian:Avanturīns
Lithuanian:Avantiurinas
Portuguese:Aventurina
Simplified Chinese:东陵石
东陵玉
Slovak:Avanturín
Spanish:Aventurina
Swedish:Aventurin

Common AssociatesHide

Associated Minerals Based on Photo Data:
Unakite1 photo of Aventurine associated with Unakite on mindat.org.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for AventurineHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dana, 1837, 341, "Syst. Min. 1st Ed."

Internet Links for AventurineHide

Localities for AventurineHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Austria
 
  • Styria
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Brazil
http://www.minerals.net/gemstone/aventurine_gemstone.aspx
Canada
 
  • Ontario
    • Renfrew Co.
      • Sebastopol Township
http://www.geologyontario.mndm.gov.on.ca/mndmfiles/MDI/data/records/MDI31F06NE00004.html
China
 
  • Xinjiang Autonomous Region
    • Akesu Prefecture (Aksu Prefecture; Aqsu Prefecture)
      • Wensu Co. (Onsu Co.)
Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Liberec Region
      • Jizerské Mtn (Iser Mtn)
geological prospecting, 2008 - 2009, Czech geological Organization
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
Kaiser, H. (1984): Die Grube Clara zu Wolfach im Schwarzwald. Verlag Karl Schillinger, Freiburg im Breisgau, 102 pp. (in German)
  • Saxony
    • Erzgebirge
      • Johanngeorgenstadt District
Wittern: "Mineralfundorte in Deutschland", 2001
India
 
  • Andhra Pradesh
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
  • Karnataka
    • Bellary district
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
    • Hassan District
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
  • Tamil Nadu
    • Chennai (Madras)
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
Japan
 
  • Honshu Island
    • Chubu Region
      • Niigata Prefecture
        • Itoigawa City
          • Ohmi
Alfredo Petrov, field collected specimens
Slovakia
 
  • Bratislava Region
    • Pezinok Co.
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
  • Košice Region
    • Košice Co.
      • Jasov (Jossau; Joss)
Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
South Africa
 
  • Limpopo Province
    • Mopani District
Minerals of South Africa
    • Murchison Range
Minerals of South Africa
    • Vhembe District
      • Soutpansberg (Zoutpansberg)
Minerals of South Africa
  • Mpumalanga Province
    • Ehlanzeni District
Minerals of South Africa
USA
 
  • Arkansas
Jay Ellis Ransom,1974, Gems and Minerals of America
  • Nebraska
    • Morrill Co.
The Minerals and Gemstones of Nebraska CSD U Neb EC 2
  • Vermont
    • Rutland Co.
      • Shrewsbury
MacFall (1975) Gem Hunter's Guide
  • Virginia
    • Albemarle Co.
Minerals of Virginia 1990 by R. V. Dietrich
  • Wisconsin
    • Wood Co.
Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Mineral and/or Locality  
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