Cuprite, Copper, Limonite and Manganese

ID	597
Mineral	Cuprite Copper Limonite Manganese
Location	Jiujiang - Jiangxi - China
Fluorescence	LW-UV: close SW-UV: close
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ID	1172
Long ID	1:1:1172:9
Formula	`Cu₂O`
IMA Status	0 1
Description	Cuprite is commonly found as an oxidation product of copper sulphides in the upper zones of veins, often associated with Native Copper, Malachite, Azurite, Limonite and Chalcocite. A fibrous form of Cuprite is known as Chalcotrichite.
Other Occurrences	Found in the oxidised zones of copper deposits.
Discovery Year	1845
Diapheny	Transparent,Translucent
Cleavage	Interrupted on {111}, more rarely on {001}.
Tenacity	brittle
Colour	Dark red to cochineal red, sometimes almost black.
Hardness (min)	3.5
Hardness (max)	4.0
Lustre	Adamantine to sub-metallic
About the name	Named in 1845 by Wilhelm Karl von Haidinger from the Latin "cuprum," in allusion to its composition. Haidinger renamed a previously known mineral that had been known by a wide variety of names.
Streak	Shining metallic brownish-red.
Crystal System	Isometric
Cleavage Type	Imperfect/Fair
Fracture type	Conchoidal
Morphology	Crystals octahedral or cubic, rarely dodecahedral, sometimes highly modified. In the variety chalcotrichite the crystals are greatly elongated [001] into capillary shapes.
Twinning	Penetration twins common.
key_elements	0
shortcode_ima	Cpr

ID	1209
Long ID	1:1:1209:2
Formula	`Cu`
IMA Status	0 1
Description	Copper Group. Copper was one of the first metals to be worked into implements and the first metal to be smelted from ores. Its excellent ductility and high conductivity assure its use in modern society.
Other Occurrences	In the oxidation zone above sulfide copper deposits, basalts, and sedimentary rocks (Red Bed deposits), rarely in meteorites.
Industrial	Electrical wire, cooking utensils, in alloys such as brass and bronze.
Diapheny	Opaque
Cleavage	None
Tenacity	malleable
Colour	Copper-red. Tarnishes to black or green in air.
Hardness (min)	2.5
Hardness (max)	3.0
Luminescence	None
Lustre	Metallic
About the name	From Greek "kyprios", of Cyprus, the location of ancient copper mines; Latin "cuprum".
Streak	Copper-red
Crystal System	Isometric
Cleavage Type	None Observed
Fracture type	Hackly
Morphology	Cubes, dodecahedra, and as tetrahexahedra; rarely as octahedra and complex combinations. Filiform, herringbone, arborescent, wires and massive.
Twinning	Spinel twins {111}
key_elements	0
shortcode_ima	Cu
Group	Copper Group

ID	2402
Long ID	1:1:2402:6
Entry type	3
Diapheny	Opaque
About the name	Named in 1813 by Johann Friedrich Ludwig Hausmann from the Greek λειμών for meadow alluding to its common occurrences in bogs.

ID	11478
Long ID	1:1:11478:9
General Appearance	Angular grains up to 0.8mm, in matrix of tephroite, spessartine, chromian hausmannite, unnamed Mn carbide.
Occurrence	PGM-Au placers derived from serpentinized ultrabasic rocks (olivine-orthoclase picrite) in the central Aldan Shield ultrabasic alkali complex, eastern Siberia.
Diapheny	Opaque
Colour	steel-grey
Hardness (min)	6.5
Hardness (max)	6.5
About the name	The native element, described in 2001 without I.M.A. approval.
Streak	dark gey
Crystal System	Isometric
Cleavage Type	None Observed
Morphology	angular grains

Price: € 225

Dimensions: Not registered

Weight: Not registered

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