VESUVIANITE Specimen Crystal Cluster Green Manganoan JEFFREY MINE CANADA RARE for Sale

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VESUVIANITE Specimen Crystal Cluster Green Manganoan JEFFREY MINE CANADA RARE For Sale

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VESUVIANITE Specimen Crystal Cluster Green Manganoan JEFFREY MINE CANADA RARE:
$39.99

This specimen weighs 6.59 grams. It measures 21 mm x 19 mm x 16 mm.I offer a shipping discount for customers who combine their payments for multiple purchases into one payment!
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Hi there, I am selling this really AMAZING Vesuvianite specimen. The reddish-purple color in this specimen is caused by the presence of manganese in the typically green vesuvianite. I found this at the Tucson Gem and Mineral Show and bought them from the actual person who collects them in Canada, and have been buying crystals from him for over 10 years. He has all great Canadian minerals, like peach colored garnets, this amazing vesuvianite specimen, and super super rare green garnets. I hope it finds a good home out there. This particular specimen is from Jeffery Mine, Val-des-Sources, Quebec, Canada. If you have any questions, do not hesitate to ask me. Thanks so much for visiting my store! Have a great day!
VesuvianiteFrom Wikipedia, the free encyclopediaJump to navigationJump to searchVesuvianite
General Category SorosilicateFormula(repeating unit) Ca10(Mg, Fe)2Al4(SiO4)5(Si2O7)2(OH,F)4IMA symbol Ves[1]Strunz classification 9.BG.35Crystal system TetragonalCrystal class Ditetragonal dipyramidal (4/mmm)H-M symbol: (4/m 2/m 2/m)Space group P4/nncUnit cell a = 15.52 Å, c = 11.82 ÅZ = 2IdentificationColor Yellow, green, brown; colorless to white, brown-black, light green, emerald green, violet, blue-green to blue, pink, purple, red, black, commonly zonedCrystal habit Short pyramidal to long prismatic crystals common, massive to columnarTwinning Fine twin domains observedCleavage Poor on {110} and {100} very poor on {001}Fracture Sub conchoidal to irregularTenacity BrittleMohs scale hardness 6–7Luster Vitreous to resinousStreak WhiteDiaphaneity Subtransparent to translucentSpecific gravity 3.32–3.43Optical properties Uniaxial (−)Refractive index nω = 1.703–1.752nε = 1.700–1.746Birefringence 0.004–0.006Pleochroism slight in colored varietiesSolubility Vesuvianite is virtually insoluble in acidsOther characteristics striated lengthwiseReferences [2][3][4]Vesuvianite, also known as idocrase, is a green, brown, yellow, or blue silicate mineral. Vesuvianite occurs as tetragonal crystals in skarn deposits and limestones that have been subjected to contact metamorphism.[3] It was first discovered within included blocks or adjacent to lavas on Mount Vesuvius, hence its name. Attractive-looking crystals are sometimes cut as gemstones. Localities which have yielded fine crystallized specimens include Mount Vesuvius and the Ala Valley near Turin, Piedmont.[5]
The specific gravity is 3.4 and the Mohs hardness is 6+1⁄2. The name "vesuvianite" was given by Abraham Gottlob Werner in 1795, because fine crystals of the mineral are found at Vesuvius; these are brown in color and occur in the ejected limestone blocks of Monte Somma. Several other names were applied to this species, one of which, "idocrase" by René Just Haüy in 1796, is now in common use.[5]
A sky bluish variety known as cyprine has been reported from Franklin, New Jersey and other locations; the blue is due to impurities of copper in a complex calcium aluminum sorosilicate. Californite is a name sometimes used for jade-like vesuvianite, also known as California jade, American jade or Vesuvianite jade. Xanthite is a manganese rich variety. Wiluite is an optically positive variety from Wilui, Siberia. Idocrase is an older synonym sometimes used for gemstone-quality vesuvianite.