Analcime



Analcime

General
Categorymineral
Chemical formulaNaAlSi2O6·H2O
Identification
ColorWhite, colorless, gray, pink, greenish, yellowish
Crystal habitTypically in crystals, usually trpezohedrons, also massive to granular.
Crystal systemCubic; tetragonal, orthorhombic, or monoclinic, pseudocubic, with degree of ordering.
TwinningPolysynthetic on [001], [110]
CleavageVery poor [100]
FractureUneven to subconchoidal
Mohs Scale hardness5 - 5.5
LusterVitreous
Refractive indexn = 1.479 - 1.493
Optical PropertiesIsotropic; anomalously biaxial (-)
Streakwhite
Specific gravity2.24 - 2.29
Fusibility3.5
Other CharacteristicsWeakly piezoelectric; weakly electrostatic when rubbed or heated.
References[1]

Analcime or analcite (from the Greek analkimos - "weak") is a white, grey, or colourless silver bearing synthetic variety also exists (Ag-analcite).

Analcime is usually classified as a calcite, and zeolites.

Locations include the Cyclopean Islands east off Sicily and near Trentino in northern Italy; Victoria in Australia; Kerguelen Island in the Indian Ocean; in the Lake Superior copper district of Michigan, Bergen Hill, New Jersey, Golden, Colorado in the United States; and at Cape Blomidon, Nova Scotia and Mont Saint-Hilaire, Quebec in Canada; and in Iceland.

See also

References

  1. ^ http://rruff.geo.arizona.edu/doclib/hom/analcime.pdf Mineral Data Publishing
  • Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7
  • Mineral Galleries
  • Mindat.org
  • Webmineral.com
 
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