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Fairburn Agate

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Formula:
SiO2
Name:
For the town of Fairburn, South Dakota where they were first found
A variety of Fortification Agate

A unique and rare variety of Fortification Agate from Fairburn, Custer Co., South Dakota, USA.


The state gem of South Dakota.

Formed in Pennsylvanian-Permian carbonate sediments and weathered out since Oligocene around the Black Hills. Agates in Nebraska formed in Pennsylvanian sediments and were transported from the Hartville uplift in Wyoming in the Oligocene.


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Pronounciation of Fairburn AgateHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Chemical Properties of Fairburn AgateHide

Formula:
SiO2

Synonyms of Fairburn AgateHide

Other Language Names for Fairburn AgateHide

German:Fairburnit
Spanish:Fairburnita

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 Fairburn AgateHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Roger K. Pabian & Allan Cook (1976) Minerals and Gemstones of Nebraska: A Handbook for Students and Collectors. EDUCATIONAL CIRCULAR No. 2

Internet Links for Fairburn AgateHide

Localities for Fairburn AgateHide

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.
USA
 
  • Colorado
    • Weld Co.
Pearl, 1958. Colorado Gem Trails & Mineral Guide
http://www.buenavistagemworks.com/agates/fairburn.htm
  • Nebraska
    • Sheridan Co.
  • South Dakota
    • Custer Co.
[Clark, 1993 - "Hey's Mineral Index"]
Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI); pgs. 21,24,79 et al.
Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI); pgs. 21,24,79 et al.
Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI); pgs. 21,24,79 et al.
    • Fall River Co.
Lapidary Journal, v. 33, no. 6, p. 1410-1415
    • Pennington Co.
Mineral and/or Locality  
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