Azurite Crystal Cluster Mineral Specimen Morenci AZ NR!

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Hi there. I am selling this amazing azurite crystal cluster mineral specimen.This piece is very lustrous and a real gem. LOOK BELOW FOR LARGER PHOTOS! This beauty weighs 24.4 carats which is 4.90 grams and is 34 mm long by 17 mm wide by 8 mm tall. It is from Morenci , Arizona , USA. I am selling off everything I own, and I am starting this out to raise money.I found termites eating my walls, and I need cash to build them back up. Iam starting this out at .99 with no reserve, and I really hope I don'tregret this, I don't even want to think about what I paid for it.I hope I don't kick myself when this is over.Please help me build new walls. If you have any questions, do not hesitate to ask me. Have fun bidding, thanks so much for visiting my auction and have a great day:>) Azurite From Wikipedia, the free encyclopedia Jump to: navigation , search Azurite may also refer to a blue Green fluorescent protein derivative . For the DFPSO vessel, see Azurite DFPSO . Azurite Azurite from China with large crystals and light surface weathering. General Category Mineral Chemical formula Cu 3(CO 3) 2(OH) 2 Identification Molar mass 344.67 g/mol Color Light Blue-Azure Blue-Dark Blue Crystal habit massive, prismatic, stalactitic, tabular Crystal system Monoclinic Twinning Rare, across {101}, {102} or {001} Cleavage Perfect on the {011}, fair on the {100} Fracture Concoidal Tenacity brittle Mohs scale hardness 3.5 to 4 Luster vitreous Streak Light Blue Density 3.77 - 3.89, Average = 3.83 Birefringence δ = 0.108 Pleochroism Visible Dispersion relatively weak Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. It is also known as Chessylite after the Chessy-les-Mines [1 ] near Lyon , France , where striking specimens have been found. The mineral has been known since ancient times, and was mentioned in Pliny the Elder 's Natural History under the Greek name kuanos (κυανός: "deep blue," root of English cyan ) and the Latin name caeruleum [2 ] The blue of azurite is exceptionally deep and clear, and for that reason the mineral has tended to be associated since antiquity with the deep blue color of low-humidity desert and winter skies. The modern English name of the mineral reflects this association, since both azurite and azure are derived via Arabic from the Persian lazhward (لاژورد), an area known for its deposits of another deep blue stone, lapis lazuli ("stone of azure"). Contents [ hide ] 1 Uses 1.1 Mineralogy 1.2 Pigments 1.3 Jewelry 1.4 Collecting 1.5 Prospecting 2 History 3 Composition 3.1 Weathering 4 References 5 See also [ edit ] Uses Azurite, Burra Mine, South Australia [ edit ] Mineralogy Azurite [3 ][ 4] [5 ] crystals are monoclinic , and when large enough to be seen they appear as dark blue prismatic crystals. Azurite specimens are typically massive to nodular, and are often stalactitic in form. Specimens tend to lighten in color over time due to weathering of the specimen surface into malachite . Azurite is soft, with a Mohs hardness of only 3.5 to 4. The specific gravity of azurite is 3.77 to 3.89. Azurite is destroyed by heat, losing carbon dioxide and water to form black, powdery copper(II) oxide. Characteristic of a carbonate, specimens effervesce upon treatment with hydrochloric acid. [ edit ] Pigments Azurite was used as a blue pigment for centuries. Depending on the degree of fineness to which it was ground, and its basic content of copper carbonate, it gave a wide range of blues. It has been known as mountain blue or Armenian stone , in addition it was formerly known as Azurro Della Magna (from Italian ). When mixed with oil it turns slightly green. When mixed with egg yolk it turns green-grey. It is also known by the names Blue Bice and Blue Verditer . Older examples of azurite pigment may show a more greenish tint due to weathering into malachite . Much azurite was mislabeled lapis lazuli , a term applied to many blue pigments. As chemical ... read more

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