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Minerals

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Dark green almost black crystals of the rare vanadium mineral natalyite from one of the only three known localities worldwide: Srednyaya Padma, Karelia, Northern Region, Russian Federation. Mineral

Natalyite

natalyite

Formula
NaV³⁺Si2O6
Mohs
7
Outstanding sharp yellow brown natanite crystals associated to globular black jacobsite from Potosi Mine, Francisco Portillo, Santa Eulalia, Chihuahua, Mexico. Mineral

Natanite

natanite

Formula
Fe²⁺[Sn(OH)6]
Mohs
4.7
Outstanding pale yellow natisite crystals from the type and one of the very few localities known worldwide (Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation), all of them in the Kola peninsula. From the material used in the description of the mineral (holotype). Ex.Dr.Hartel collection. Mineral

Natisite

natisite

Formula
Na2Ti(SiO4)O
Mineral

Native Cerium

native cerium

Formula
Ce
Copper Locality: Ray Mine, Scott Mountain area, Mineral Creek District (Ray District), Dripping Spring Mts, Pinal County, Arizona, USA (Locality at mindat.org) This is a copper from Ray of a rather untradtitional form and of high quality, i think. It comes from the second collection of Steve Neely, who got it from Al over a decade ago. It came to me through Steve actually, rather than from Al with the rest of the specimens shown here. It is exceptionally well-formed on both sides, and can be displayed from either side with equal effect. No matrix (its propped on putty in the photo). One of the more unique Ray Coppers!, compared to many other Ray coppers I have seen! 5.25 x 4 x 1 cm Mineral

Native Copper

native copper

Formula
Cu
Mohs
2.75
Native gold Locality: Mina Zapata, Santa Elena de Uairen, Bolívar, Venezuela Size: 3.46 x 3.12 x 1.79 cm. Mineral

Native Gold

native gold

Formula
Au
Mohs
2.75
Close up photo of a piece of purified silicon. Mineral

Native Silicon

native silicon

Formula
Si
This specimen contains (tarnished) native silver on quartz. The specimen is 6 cm across. Native silver is only a minor ore of silver today; most silver comes from other minerals. Native silver typically forms in thin wirey crystals, but in this specimen it is more blocky and granular. Mineral

Native Silver

native silver

Formula
Ag
Mohs
2.75
Outstanding metallic crystals of the very rare native element zinc. Associated minerals in the specimen are white hydrozincite and zincite. From: Sclaignaeux, Namur District, Belgium. Mineral

Native Zinc

native zinc

Formula
Zn
Mohs
2
White aggregates of the mineral natrite from Karnasurt Mountain (Lovozero Massif, Northern Region, Russian Federation). The specimen is part of the holotype used by the researcher Dr. Khomyakov. Mineral

Natrite

natrite

Formula
Na2CO3
Natroalunite as a vein in quartzite. Castillo hill, Nogueras, Teruel, España Mineral

Natroalunite

natroalunite

Formula
NaAl3(SO4)2(OH)6
Mineral

Natroaphthitalite

natroaphthitalite

Formula
KNa3(SO4)2
Mineral

Natroboltwoodite

natroboltwoodite

Formula
Na(UO2)(SiO3OH) * H2O
Natrochalcite Locality: Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta Region, Chile (Locality at mindat.org) Size: small cabinet, 7.3 x 5.5 x 4.5 cm Natrochalcite This is a rare hydrated, hydroxyl, sulfate, of sodium and copper that occurs primarily in arid areas, like Chuquicamata. The emerald green natrochalcite, in translucent crystals to .7 cm across, is color contrasted with its whitish-green matrix. Some crystals are obviously damaged but overall the piece is exceptionally rich and colorful, so you can put up with it at the right price. This is another mineral species that never appears in dealers stocks. Mineral

Natrochalcite

natrochalcite

Formula
NaCu2(SO4)2(OH)·H2O
Mohs
4.5
Natrodufrénite Locality: Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany Field of view 3 mm. Specimen and photo Leon Hupperichs. Mineral

Natrodufrénite

natrodufrénite
Mineral

Natroglaucocerinite

natroglaucocerinite

Formula
Zn6Al3(OH)18[Na(H2O)6](SO4)2·6H2O
Natrojarosite from Asland Quarry, Montcada i Reixac, Barcelona, Catalonia Mineral

Natrojarosite

natrojarosite

Formula
NaFe³⁺3(SO4)2(OH)6
FOV 2.4 x 3.2 mm. Modris Baum coll. This is an XRD analyzed specimen from the Poudrette pegmatite (Thanks to Dr. AMcD. We were both very surprised by the result.) The red/brown resinous "caps" usually seen on earlier finds are totally absent here. (According to the 2001 paper describing natrolemoyinite [1], these caps are lepidocrocite, not hisingerite, as has often been alleged.) Nov 2017: Recent qualitative EDS indicates that this is actually end-member natrolemoynite - there is no Ca in the spectrum. Mineral

Natrolemoynite

natrolemoynite

Formula
Na4Zr2Si10O26*9H2O
Crossite, neptunite, benitoite, natrolite - California State Gem Mine, Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA Mineral

Natrolite

natrolite

Formula
Na2(Si3Al2)O10·2H2O
Mineral

Natromarkeyite

natromarkeyite

Formula
Na2Ca8(UO2)4(CO3)13(H2O)24·3H2O
Mineral

Natromelansonite

natromelansonite

Formula
Na3Zr[Si7AlO19]·4H2O
Mineral

Natromolybdite

natromolybdite

Formula
Na2MoO4·2H2O
Mineral

Natromontebrasite

natromontebrasite

Formula
NaAlPO4(OH)
A crystal group of the very rare mineral of simple chemistry, natron, from a little known locality in Egypt: El-Fazda Lake, El Beheira Governorate, Egypt. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Natron

natron

Formula
Na2CO3·10H2O
Mohs
1.5