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|Colour:||Medium blue occasionally ...||Hardness:||5½ - 6½|
A gem name for a chalcedony coloured by chrysocolla.
Visit gemdat.org for gemological information about Gem Silica. Currently in public beta-test.
Classification of Gem Silica
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Occurrences of Gem Silica
|Geological Setting:||Veins in copper ore deposits|
Physical Properties of Gem Silica
|Lustre:||Vitreous, Sub-Vitreous, Resinous|
|Comment:||Takes a high polish|
|Colour:||Medium blue occasionally with a tinge of green from other minerals|
|Hardness (Mohs):||5½ - 6½|
Relationship of Gem Silica to other Species
|Health Warning:||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 Silica
Localities for Gem Silica
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.
(TL) indicates type locality. ? 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.
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Locality Updated: Black Rock, Truro, Colchester Co., Nova Scotia, CanadaFrom Ronnie Van Dommelen (2), 19th Sep 2014 21:48:55