Aurichalcite

Aurichalcite

Infobox mineral
name = Aurichalcite
category = Carbonate mineral
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caption =
formula = (Zn,Cu)5(CO3)2(OH)6
molweight =
color = pale green, greenish blue, sky blue
habit = Acicular to druzy encrustations
system = Monoclinic-prismatic
twinning =
cleavage = [010] Perfect
fracture = Uneven
mohs = 2
luster = Pearly
refractive = nα = 1.655 nβ = 1.740 nγ = 1.744
opticalprop = Biaxial (-)
birefringence = 0.0890
pleochroism = Weak colorless to pale green
streak = Light blue
gravity = 3.64 - 3.9
melt =
fusibility =
diagnostic =
solubility =
diaphaneity =
other =
var1 =

Aurichalcite is a carbonate mineral, usually found as a secondary mineral in copper and zinc deposits. Its chemical formula is (Zn,Cu)5(CO3)2(OH)6. The zinc to copper ratio is about 5:4×←×←±.

Associated minerals include: rosasite, smithsonite, hemimorphite, hydrozincite, malachite and azurite.

It was first described in 1839 by Bottger who named the mineral for its zinc and copper content after the Greek όρειχαλκος, for "mountain brass" or "mountain copper", the name of a fabulous metal.

References

* [http://rruff.geo.arizona.edu/doclib/hom/aurichalcite.pdf Handbook of Mineralogy]
* [http://www.mindat.org/min-422.html Mindat]
* [http://webmineral.com/data/Aurichalcite.shtml Webmineral data]


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Look at other dictionaries:

  • Aurichalcite — Catégorie V : carbonates et nitrates[1] Aurichalcite Mine d Escouloubre, Aude, France (XX 6 mm) …   Wikipédia en Français

  • Aurichalcite — Au ri*chal cite, n. [See {Aurichalceous}.] (Min.) A hydrous carbonate of copper and zinc, found in pale green or blue crystalline aggregations. It yields a kind of brass on reduction. [1913 Webster] …   The Collaborative International Dictionary of English

  • aurichalcite — ● aurichalcite nom masculin (latin aurichalcum, cuivre jaune) Hydrocarbonate naturel de cuivre et de zinc, de nuance vert de gris …   Encyclopédie Universelle

  • aurichalcite — ˌȯrəˈkalˌsīt noun ( s) Etymology: German aurichalzit, from Latin aurichalcum yellow copper ore (alteration influenced by aurum gold of orichalcum) + German it ite more at orichalc : a mineral ( …   Useful english dictionary

  • aurichalcite — ▪ mineral  a mineral composed of the hydroxide carbonate of zinc and copper (Zn, Cu)5(OH)6(CO3)2. It is commonly found with malachite in the oxidized zone of zinc and copper deposits as at Tomsk, Siberia; Santander, Spain; and Bisbee, Ariz., U.S …   Universalium

  • aurichalcite — noun A basic carbonate mineral of copper and zinc …   Wiktionary

  • aurichalcite —    A cave mineral (Zn,Cu)5(CO3)2(OH)6 …   Lexicon of Cave and Karst Terminology

  • aurichalcite — au·ri·chal·cite …   English syllables

  • Auricalcite — Aurichalcite Aurichalcite Catégorie V : carbonates et nitrates Aurichalcite Mine d Escouloubre, Aude, France (XX6mm) …   Wikipédia en Français

  • Buratite — Aurichalcite Aurichalcite Catégorie V : carbonates et nitrates Aurichalcite Mine d Escouloubre, Aude, France (XX6mm) …   Wikipédia en Français

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