ADAMITE Green Crystal Cluster Mineral Specimen OJUELA MINE Mapimi MEXICO for Sale

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ADAMITE Green Crystal Cluster Mineral Specimen OJUELA MINE Mapimi MEXICO For Sale

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ADAMITE Green Crystal Cluster Mineral Specimen OJUELA MINE Mapimi MEXICO:
$16.99

This specimen weighs 10.24 grams. It measures 26 mm x 26 mm x 20 mm.
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and I will buy back the item for your full purchase price.Hi there. I am selling this beautiful adamite specimen from Mina Ojuela, Mapimi, Durango, Mexico. I found it at the Tucson Gem and Mineral show near my home in Tucson, AZ. I hope it finds a good home out there. This piece is really beautiful. It\'s a beautiful pale green. Thanks so much for visiting my sale and have a great day!

The following is information about this mineral from wikipedia:
AdamiteFrom Wikipedia, the free encyclopediaJump to navigationJump to searchThis article is about the mineral. For the religious sect, see adamite in limoniteGeneralCategory Arsenate mineralFormula(repeating unit) Zn2AsO4OHIMA symbol Ad[1]Strunz classification 8.BB.30Dana classification 41.06.06.03Olivenite groupCrystal system OrthorhombicCrystal class Dipyramidal (mmm)H-M symbol: (2/m 2/m 2/m)Space group PnnmIdentificationColor Pale yellow, honey-yellow, brownish yellow, reddish; rarely white, colorless, blue, pale green to green, may be zoned;Crystal habit Wedge-like prisms typically in druses and radiating clusters - also smooth botryoidal masses.Cleavage {101}, good; {010}, poorFracture Uneven to subconchoidalTenacity BrittleMohs scale hardness 3.5Luster VitreousStreak white to pale greenSpecific gravity 4.32–4.48 measuredOptical properties Biaxial (+/-)Refractive index nα=1.708 - 1.722, nβ=1.742 - 1.744, nγ=1.763 - 1.773Birefringence δ = 0.055Other characteristics May fluoresce and phosphoresce lemon-yellow under SW and LW UVReferences [2][3][4]Adamite is a zinc arsenate hydroxide mineral, Zn2AsO4OH. It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture. Tints of green also occur and are connected with copper substitutions in the mineral structure. Olivenite is a copper arsenate that is isostructural with adamite and there is considerable substitution between zinc and copper resulting in an intermediate called cuproadamite. Zincolivenite is a recently discovered mineral being an intermediate mineral with formula CuZn(AsO4)(OH). Manganese, cobalt, and nickel also substitute in the structure. An analogous zinc phosphate, tarbuttite, is known.Adamite on limonite from the Gold Hill District Tooele County, Utah, USA - Scale at bottom is approx. 2.5 cm.OccurrenceAdamite occurs as a secondary mineral in the oxidized zone of zinc- and arsenic-bearing hydrothermal mineral deposits. It occurs in association with smithsonite, hemimorphite, scorodite, olivenite, calcite, quartz and iron and manganese oxides.[2]
The yellow to bright lime-green colored crystals and druze along with its distinctive fluorescence make adamite a favorite among mineral collectors. Found in Mapimí, Durango, Mexico; Greece; and California and Utah in the United States.
Adamite was named after the French mineralogist Gilbert-Joseph Adam (1795–1881). It was first described in 1866 for an occurrence at the type locality of Chañarcillo, Copiapó Province, Atacama Region, Chile.[3]