ROSELITE Dark Red Violet Natural Crystal Cluster Mineral Specimen MOROCCO for Sale

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ROSELITE Dark Red Violet Natural Crystal Cluster Mineral Specimen MOROCCO For Sale

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ROSELITE Dark Red Violet Natural Crystal Cluster Mineral Specimen MOROCCO:
$29.99

This specimen weighs 92.60 grams. It measures 41 mm x 41 mm x 38 mm.I offer a shipping discount for customers who combine their payments for multiple purchases into one payment!
The discount is regular shipping price for the first item and just 50 cents for each additional item!
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If you are not 100% happy with your purchase just send me a message to let me know
and I will buy back the item for your full purchase price.Hi there. I am selling this really amazing beautiful roselite specimen from Morocco. These are some of my favorite mineral specimens because their beautiful wine red color. There's really nothing else like them. If you have any questions, do not hesitate to ask me. Have fun offerding, thanks so much for visiting my sale and have a great day!
Here's a wikipedia article about historyFrom Wikipedia, the free encyclopediaRoseliteRosélite, dolomite 7100.2606.jpgGeneralCategory Arsenate mineralsFormula(repeating unit) Ca2(Co2+, Mg)[AsO4]2·H2O+IMA symbol Rsl[1]Strunz classification 8.CG.10Crystal system MonoclinicCrystal class Prismatic (2/m)(same H-M symbol)Space group P21/cUnit cell a = 5.801 Å, b = 12.898 Åc = 5.617 Å; β = 107.42°; Z = 2IdentificationColor Dark rose red, pinkCrystal habit Elongated crystals and spherical aggregates and drusesTwinning Common as composition plane, contact twins and fourlingsCleavage {010} PerfectMohs scale hardness 3.5Luster VitreousStreak Light redSpecific gravity 3.69Optical properties Biaxial (-)Refractive index nα = 1.725 nβ = 1.728 nγ = 1.735Pleochroism (Dark rose) X: Dark rose,Y: Pale rose,Z: Paler rose(Light rose) X: Pale rose,Y: Paler rose,Z: Palest rose2V angle Calculated: 68°References [2][3][4]Roselite is a rare arsenate mineral with chemical formula: Ca2(Co,Mg)[AsO4]2·H2O. It was first described in 1825 for an occurrence in the Rappold mines of Schneeberg, Saxony, Germany and named by Armand Lévy after German mineralogist Gustav Rose.[2] It occurs in cobalt bearing hydrothermal environments and was associated with veins of quartz and chalcedony in the type locality.[2][4] It has also been reported from Italy, Morocco, Chile, British Columbia and several locations in Germany.[2]
The pleochroism of roselite depends on chemical composition with darker rose colored varieties being higher in cobalt content and lighter rose colored varieties are higher in calcium and magnesium content (Palache et al., 1960). This gives rise to two different pleochroism schemes, one for dark rose and one for light rose. Dark rose varieties have X: dark rose, Y: pale rose, Z: paler rose. Light rose varieties have X: pale rose, Y: paler rose, Z: palest rose.