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Fire Agate

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Hardness:
6½ - 7
Name:
From the appearance of this chalcedony variety.
A variety of Chalcedony

A variety of chalcedony containing inclusions of goethite or limonite, producing an iridescent effect or "fire."

Visit gemdat.org for gemological information about Fire Agate.

Classification of Fire Agate

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Physical Properties of Fire Agate

Vitreous, Waxy
Diaphaneity (Transparency):
Translucent
Comment:
vitreous when polished
Hardness (Mohs):
6½ - 7

Other Names for Fire Agate

Name in Other Languages:
German:Feuerachat
Simplified Chinese:闪光玛瑙

Other Information

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

Internet Links for Fire Agate

Localities for Fire Agate

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Mexico
 
    • Mun. de Calvillo
      • Calvillo
Karel Bal Collection
    • Mun. de Tepezalá
Carlos Medina specimens
  • Chihuahua
USA
 
Simpson, B., and Mitchell, J. R. 1989 Gem Trails of Arizona: Gem Guides Book company, Baldwin Park, California, 124 p.
    • Graham Co.
      • Aravaipa District
        • Aravaipa Valley
MRDS database Dep. ID #10062449, MRDS ID #TC35913.
      • Black Hills
P Cristofono collection
      • Chaney Place
Simpson, B., and Mitchell, J. R. 1989 Gem Trails of Arizona: Gem Guides Book company, Baldwin Park, California, 124 p.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 349.; Canton, P. M. 1974 Fire Agates in Arizona and California. Lapidary Journal v. 31, no. 3, p. 812 - 818.
      • Galiuro Mts
MRDS database Dep. ID #10137577, MAS ID #0040090173.; Canton, P. M. 1974 Fire Agates in Arizona and California. Lapidary Journal v. 31, no. 3, p. 812 - 818.
      • Gila Mts
        • Lone Star District (Safford District; Dos Pobres District)
Rockhounding Arizona, 2nd: A Guide to 75 of the State's Best Rockhounding Sites By Gerry Blair
    • Greenlee Co.
Pabian R. Agate Lexicon UNL Database
    • La Paz Co.
      • Black Mts
Peirce, H.W. (1969) Gem Materials, in USGS & Arizona Bureau of Mines, and U.S. Bureau of Reclamation, Mineral and Water Resources of Arizona, Arizona Bureau of Mines Bull. 180 (USGS Bull.871): 359. MRDS database Dep. ID file #10023619, MRDS ID #I000808.
    • Maricopa Co.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 349.; Canton, P. M. 1974 Fire Agates in Arizona and California. Lapidary Journal v. 31, no. 3, p. 812 - 818.
Blair, 1992. Rockhounding Arizona, p.68.
        • Oatman District (San Francisco District; Union Pass District)
Blair, 1992. Rockhounding Arizona, p.70.
Gemstones producers list, US Bur. Mines; MRD file #10210510.
    • Yuma Co.
      • Castle Dome Mts
Brauer, O. L. (1964) The Castle Dome Fire Agate Field: Lapidary Journal, v. 18, no. 4, p. 460-462
Blair, 1992. Rockhounding Arizona, p.157.
  • California
    • Riverside Co.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
      • Mule Mts
Perry, L. 1976a The Opal Hill Fire Agate Mine: Gems and Minerals, no. 461, p. 56, 57, 77.
        • Palo Verde area
Strong, Mary Frances Berkholz (1964a), Fire agate in the Mule Mountains: Gems & Minerals, No. 319: 16-18, April 1964: 16.; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
        • Wiley Well District
          • Coon Hollow
Henry, D.J. (1947), Wiley Well district a mecca for the collector: The Mineralogist: 15: 171-176; Strong, Mary Frances Berkholz (1964a), Fire agate in the Mule Mountains: Gems & Minerals, No. 319, April 1964: 16-18; Saul, R.B., Evans, J.R., and Gray, C.H. (1970) Mines and mineral resources of Riverside County. California Division of Mines and Geology County Report 9. Unpublished manuscript: 279; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 348.
  • New Mexico
    • Luna Co.
NMBGMR Open-file Report OF-459
Mineral and/or Locality  
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