About: Chrysocolla   Sponge Permalink

An Entity of Type : dbkwik:resource/6IIoeMLPkySiK--1vpcViQ==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Chrysocolla was a translucent variety of chalcedony, its blue-green to green color due to traces of copper.

AttributesValues
rdf:type
rdfs:label
  • Chrysocolla
  • Chrysocolla
rdfs:comment
  • Chrysocolla was a translucent variety of chalcedony, its blue-green to green color due to traces of copper.
  • Chrysocolla has an attractive blue-green colour and is a minor ore of copper, having a hardness of 2.5 to 3.5. It is also used as an ornamental stone. It is typically found as glassy botryoidal or rounded masses and crusts, or vein fillings. Because of its light color, it is sometimes confused with turquoise. Commonly it occurs only as pourous crusts unsuitable for gem use, but high quality, gem grade chrysocolla can be translucent and is highly prized.
sameAs
dcterms:subject
dbkwik:ceramica/pr...iPageUsesTemplate
dbkwik:forgotten-r...iPageUsesTemplate
dbkwik:forgottenre...iPageUsesTemplate
Category
  • Silicate mineral
opticalprop
  • Uniaxial
Rules
  • 2(xsd:integer)
mohs
  • 25(xsd:integer)
Gravity
  • 19(xsd:integer)
Name
  • Chrysocolla
  • Chrysocolla
Type
Value
  • 10(xsd:integer)
Caption
  • Chrysocolla from Nevada, USA
  • Three samples of chrysocolla
streak
  • white to a blue-green color
formula
  • 2(xsd:integer)
System
Color
  • Blue, blue-green, green
cleavage
  • none
habit
  • Massive, nodular, botryoidal
diaphaneity
  • Translucent to opaque
fracture
  • Brittle to sectile
refractive
  • nω = 1.460 nε = 1.570
luster
  • Vitreous to dull
birefringence
  • +0.110
abstract
  • Chrysocolla has an attractive blue-green colour and is a minor ore of copper, having a hardness of 2.5 to 3.5. It is also used as an ornamental stone. It is typically found as glassy botryoidal or rounded masses and crusts, or vein fillings. Because of its light color, it is sometimes confused with turquoise. Commonly it occurs only as pourous crusts unsuitable for gem use, but high quality, gem grade chrysocolla can be translucent and is highly prized. The name comes from the Greek chrysos, "gold", and kolla, "glue", in allusion to the name of the material used to solder gold, and was first used by Theophrastus in 315 BCE. Notable occurrences include Israel, Democratic Republic of Congo, Chile, Cornwall in England, and Arizona, Utah, New Mexico and Pennsylvania in the United States.
  • Chrysocolla was a translucent variety of chalcedony, its blue-green to green color due to traces of copper.
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