Rare SMITHSONITE Crystal Cluster Mineral Specimen CHIHUAHUA MEXICO
Item History & Price
| Reference Number: Avaluer:5171861 | Type: Smithsonite |
| Weight: 9.27 grams | Size: 26 mm x 19 mm x 12 mm |
This specimen weighs 9.27 grams. It measures 26 mm x 19 mm x 12 mm.
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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 nice Smithsonite Crystal Cluster Mineral Specimen. It is really beautiful. It is a collection piece of mine that I have had. This specimen was collected from San Antonio Mine, Chihuahua, Mexico. If you have any questions, do not hesitate to ask me. Thanks so much for visiting my listing and have a great day!The following is a wikipedia entry about smithsonite:SmithsoniteFrom Wikipedia, the free encyclopediaJump to navigationJump to searchSmithsoniteSmithsonite-Willemite-cktsu-23a.jpgGeneralCategory Carbonate mineralFormula(repeating unit) ZnCO3Strunz classification 5.AB.05Crystal system TrigonalCrystal class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)Space group R3cUnit cell a = 4.6526(7) c = 15.0257(22) [Å]; Z = 6IdentificationColor White, grey, yellow, green to apple-green, blue, pink, purple, bluish grey, and brownCrystal habit Uncommon as crystals, typically botryoidal, reniform, spherulitic; stalactitic, earthy, compact massiveTwinning None observedCleavage Perfect on [1011]Fracture Uneven, sub-conchoidalTenacity BrittleMohs scale hardness 4.5Luster Vitreous, may be pearlyStreak WhiteDiaphaneity TranslucentSpecific gravity 4.4 - 4.5Optical properties Uniaxial (-)Refractive index nω = 1.842 - 1.850 nε = 1.619 - 1.623Birefringence δ = 0.223 - 0.227Ultraviolet fluorescence May fluoresce pale green or pale blue under UVReferences [1][2][3]Smithsonite, or zinc spar, is zinc carbonate (ZnCO3), a mineral ore of zinc. Historically, smithsonite was identified with hemimorphite before it was realised that they were two distinct minerals. The two minerals are very similar in appearance and the term calamine has been used for both, leading to some confusion. The distinct mineral smithsonite was named in 1832 by François Sulpice Beudant in honor of English chemist and mineralogist James Smithson (c.1765–1829), whose bequest established the Smithsonian Institution and who first identified the mineral in 1802.[2][4]
Smithsonite is a variably colored trigonal mineral which only rarely is found in well formed crystals. The typical habit is as earthy botryoidal masses. It has a Mohs hardness of 4.5 and a specific gravity of 4.4 to 4.5.
Smithsonite occurs as a secondary mineral in the weathering or oxidation zone of zinc-bearing ore deposits. It sometimes occurs as replacement bodies in carbonate rocks and as such may constitute zinc ore. It commonly occurs in association with hemimorphite, willemite, hydrozincite, cerussite, malachite, azurite, aurichalcite and anglesite. It forms two limited solid solution series, with substitution of manganese leading to rhodochrosite, and with iron, leading to siderite.[3]
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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!
To be sure you get your shipping discount just make sure all the items you want to purchase are in your cart.
Auctions you win are added to your cart automatically.
For any "buy it now" items... or second chance offers, be sure to click the "add to cart" button, NOT the "buy it now" button.
Onceall of your items are in your cart just pay for them from your cart andthe combined shipping discount should be applied automatically.
I offer a money back guarantee on every item I sell.
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 nice Smithsonite Crystal Cluster Mineral Specimen. It is really beautiful. It is a collection piece of mine that I have had. This specimen was collected from San Antonio Mine, Chihuahua, Mexico. If you have any questions, do not hesitate to ask me. Thanks so much for visiting my listing and have a great day!The following is a wikipedia entry about smithsonite:SmithsoniteFrom Wikipedia, the free encyclopediaJump to navigationJump to searchSmithsoniteSmithsonite-Willemite-cktsu-23a.jpgGeneralCategory Carbonate mineralFormula(repeating unit) ZnCO3Strunz classification 5.AB.05Crystal system TrigonalCrystal class Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)Space group R3cUnit cell a = 4.6526(7) c = 15.0257(22) [Å]; Z = 6IdentificationColor White, grey, yellow, green to apple-green, blue, pink, purple, bluish grey, and brownCrystal habit Uncommon as crystals, typically botryoidal, reniform, spherulitic; stalactitic, earthy, compact massiveTwinning None observedCleavage Perfect on [1011]Fracture Uneven, sub-conchoidalTenacity BrittleMohs scale hardness 4.5Luster Vitreous, may be pearlyStreak WhiteDiaphaneity TranslucentSpecific gravity 4.4 - 4.5Optical properties Uniaxial (-)Refractive index nω = 1.842 - 1.850 nε = 1.619 - 1.623Birefringence δ = 0.223 - 0.227Ultraviolet fluorescence May fluoresce pale green or pale blue under UVReferences [1][2][3]Smithsonite, or zinc spar, is zinc carbonate (ZnCO3), a mineral ore of zinc. Historically, smithsonite was identified with hemimorphite before it was realised that they were two distinct minerals. The two minerals are very similar in appearance and the term calamine has been used for both, leading to some confusion. The distinct mineral smithsonite was named in 1832 by François Sulpice Beudant in honor of English chemist and mineralogist James Smithson (c.1765–1829), whose bequest established the Smithsonian Institution and who first identified the mineral in 1802.[2][4]
Smithsonite is a variably colored trigonal mineral which only rarely is found in well formed crystals. The typical habit is as earthy botryoidal masses. It has a Mohs hardness of 4.5 and a specific gravity of 4.4 to 4.5.
Smithsonite occurs as a secondary mineral in the weathering or oxidation zone of zinc-bearing ore deposits. It sometimes occurs as replacement bodies in carbonate rocks and as such may constitute zinc ore. It commonly occurs in association with hemimorphite, willemite, hydrozincite, cerussite, malachite, azurite, aurichalcite and anglesite. It forms two limited solid solution series, with substitution of manganese leading to rhodochrosite, and with iron, leading to siderite.[3]
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