Chrysocolla specimen from Ray mine, in the Scott Mountain area of Mineral Creek District, Pinal County, Arizona, US
General
Category
Phyllosilicate minerals, mineraloids
Formula (repeating unit)
Cu2 − xAlx(H2Si2O5)(OH)4·nH2O (x < 1)[1]
IMA symbol
Ccl[2]
Strunz classification
9.ED.20
Crystal system
Orthorhombic Unknown space group
Unit cell
a = 5.7 Å, b = 8.9 Å, c = 6.7 Å; Z = 1
Identification
Color
Blue, cyan (blue-green), green, dark blue to black, brown, rarely yellow
Crystal habit
Massive, nodular, botryoidal
Cleavage
none
Fracture
Irregular/uneven, sub-conchoidal
Tenacity
Brittle to sectile
Mohs scale hardness
2.5–3.5 (7 for chrysocolla chalcedony, high-silica content)
Luster
Vitreous to dull
Streak
White to a blue-green color
Diaphaneity
Translucent to opaque
Specific gravity
1.9–2.4
Optical properties
Biaxial (−)
Refractive index
nα = 1.575–1.585 nβ = 1.597 nγ = 1.598–1.635
Birefringence
δ = 0.023–0.050
References
[3][4][1][5]
Chrysocolla (/ˌkrɪsəˈkɒlə/KRIS-ə-KOL-ə) is a hydrous copper phyllosilicate mineral and mineraloid with the formula Cu 2 – xAl x(H 2Si 2O 5)(OH) 4⋅nH 2O (x < 1)[1] or (Cu, Al) 2H 2Si 2O 5(OH) 4⋅nH 2O).[4]
The structure of the mineral has been questioned, as a 2006 spectrographic study suggest material identified as chrysocolla may be a mixture of the copper hydroxide spertiniite and chalcedony.[6]
^ abcChrysocolla, Mindat.org
^Warr, L. N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
^"Chrysocolla". Mineralienatlas – Fossilienatlas.
^ ab"Chrysocolla" (PDF). Handbook of Mineralogy.
^Chrysocolla Mineral Data, WebMineral.com
^Cite error: The named reference farges2006 was invoked but never defined (see the help page).
Chrysocolla (/ˌkrɪsəˈkɒlə/ KRIS-ə-KOL-ə) is a hydrous copper phyllosilicate mineral and mineraloid with the formula Cu 2 – xAl x(H 2Si 2O 5)(OH) 4⋅nH...
masses. It is also a common form of goethite, smithsonite, fluorite, and chrysocolla. Similar habits are reniform (kidney-shaped) and mammillary (breast-shaped...
quantities of silica may react with dissolved copper forming dioptase and chrysocolla. The Altyn Tube mine in Kazakhstan still provides handsome specimens;...
minerals, including malachite, azurite, turquoise, pseudomalachite, and chrysocolla. Eilat stone is the national stone of Israel, and is also known as the...
deeper primary copper sulfide orebodies. Tenorite commonly occurs with chrysocolla and the copper carbonates, azurite and malachite. The dull grey-black...
other secondary copper minerals such as chrysocolla is also common. Turquoise is distinguished from chrysocolla, the only common mineral with similar properties...
deposits. It frequently occurs in association with native copper, azurite, chrysocolla, malachite, tenorite and a variety of iron oxide minerals. It is known...
chalcopyrite and molybdenum from molybdenite. Copper oxides include chrysocolla, malachite and azurite. The mine's concentrator has a capacity of 75...
intergrown stalactites with bulls-eye banding Aventurine Brochantite Chrysocolla Dioptase Green pigments List of inorganic pigments Plancheite Pseudomalachite...
structure, organic Anthracite or hard coal Bituminous coal Chlorophaeite Chrysocolla, solid (IMA/CNMNC valid mineral name) Deweylite, a mixture of serpentine...
Shattuckite, a copper silicate hydroxide mineral with formula Cu5(SiO3)4(OH)2 Chrysocolla is a hydrated copper phyllosilicate mineral (with aluminum) with formula:...
in a matrix of limonite there is a cluster of deep robin's-egg blue chrysocolla with a covering of drusy quartz Amygdule Rock microstructure Vesicular...
Tsumeb, Namibia. A 2006 study has produced evidence the blue mineral chrysocolla may be a microscopic mixture of spertiniite, amorphous silica and water...
Brochantite is often associated with minerals such as malachite, azurite, and chrysocolla, and may form pseudomorphs with these minerals. The mineral is found...
association with cuprite, brochantite, linarite, caledonite, malachite, chrysocolla and its polymorphs. Atacamite has been discovered in the patina of the...
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