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Gem Silica

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Colour:
Medium blue occasionally with a tinge of green from other minerals
Lustre:
Vitreous, Sub-Vitreous, Resinous
Hardness:
5½ - 6½
A gem name for a chalcedony coloured by chrysocolla.

Visit gemdat.org for gemological information about Gem Silica.


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Pronounciation of Gem SilicaHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Gem SilicaHide

Vitreous, Sub-Vitreous, Resinous
Transparency:
Translucent
Comment:
Takes a high polish
Colour:
Medium blue occasionally with a tinge of green from other minerals
Streak:
White
Hardness:
5½ - 6½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal, Sub-Conchoidal

Common AssociatesHide

ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
MalachiteCu2(CO3)(OH)2
QuartzSiO2
TenoriteCuO
Associated Minerals Based on Photo Data:
Malachite4 photos of Gem Silica associated with Malachite on mindat.org.
Quartz1 photo of Gem Silica associated with Quartz 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.
Industrial Uses:
Gem material

Internet Links for Gem SilicaHide

Localities for Gem SilicaHide

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
 
  • Arizona
    • Gila Co.
      • Globe-Miami District
        • Miami-Inspiration District
          • Inspiration
            • Miami-Inspiration deposit
              • Inspiration Mine
Brian Cowger
    • Greenlee Co.
      • Shannon Mts
        • Copper Mountain District (Clifton-Morenci District)
          • Morenci
Brian Cowger
    • Pinal Co.
      • Dripping Spring Mts
        • Mineral Creek District (Ray District)
          • Scott Mountain area
Chris Boyd
Mineral and/or Locality  
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