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Mineralati

Minerals

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White radial aggregates of the rare Be-mineral sphaerobertrandite from Russia (Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation). Ex. Erich Laskowski collection (USA). Mineral

Sphaerobertrandite

sphaerobertrandite

Formula
Be3(SiO4)(OH)2
Mineral

Sphaerobismoite

sphaerobismoite

Formula
Bi2O3
Sphalerite with Quartz - Huaron Mines, Huaron Mining District, San Jose de Huayllay District, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru (10.5x8.5cm) Mineral

Sphalerite

Formula
ZnS
Mohs
3.5–4
Colour
Yellow, brown, black
Mineral

Spheniscidite

spheniscidite

Formula
(NH4)Fe³⁺2(PO4)2(OH)(H2O)·H2O
Spherocobaltite Locality: Kolwezi, Western area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) (Locality at mindat.org) This is the by far the single brightest, most fake-looking, neon-pink specimen I have ever seen of this rare material often mistaken for the more common species cobaltian calcite, composed of microcrystalline crystals forming pleasntly curvaceous spherical aggregates. Accented by a bit of aragonite, to show you the pics aren't tampered with - it really is BRIGHTER in person.. It is VIBRANT! 4 x 3.6 x 1.1 cm Mineral

Spherocobaltite

spherocobaltite

Formula
CoCO3
Spinel. 4.13ct and 1.83ct. taken by Azuncha. Mineral

Spinel

spinel

Formula
MgAl2O4
Mineral

Spionkopite

spionkopite

Formula
Cu39S28
Scanning Electron Microscopy-BackScattered Electron (SEM-BSE) image of spiridonovite (SPI) associated with cameronite (CAM), rickardite (RIC), vulcanite (VUL) and tellurium (TEL). The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Spiridonovite

spiridonovite

Formula
(Cu1-xAgx)2Te
Platy pink crystal aggregates of the very rare tellurium mineral spiroffite from the type locality. Associated mineral is yellow tellurite. Spiroffite has only been found in 3 localities worldwide. From: Bambollita Mine, Moctezuma, Sonora, Mexico. Analyzed specimen. Mineral

Spiroffite

spiroffite

Formula
(Mn,Zn,Ca)2Te3,O8
spodumene var. kunzite, quartz : Barra de Salinas district, Barra de Salinas, Coronel Murta, Jequitinhonha Valley, Minas Gerais, Brazil Mineral

Spodumene

spodumene

Formula
LiAlSi2O6
Mineral

Spriggite

spriggite

Formula
Pb3(UO2)6O8(OH)2 * 3H2O
Mineral

Springcreekite

springcreekite

Formula
BaV³⁺3(PO4)2(OH, H2O)6
Mineral

Spryite

spryite

Formula
Ag8(As³⁺0.5As⁵⁺0.5)S6
Spurrite Locality: Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA Description: A 3.2 by 2.8 cms light blue mass. JSS specimen and photo. Mineral

Spurrite

spurrite

Formula
Ca5(SiO4)2(CO3)
Periclase, Srebrodolskite (Picture size 5 mm) Fundort: Ronneburg, Thuringia, Germany White to light greenish Periclase with black Srebrodolskite. Collection and foto Thomas Witzke. Mineral

Srebrodolskite

srebrodolskite

Formula
Ca2Fe³⁺2O5
Mineral

Srilankite

srilankite

Formula
TiO2
Tiny black crystal of the extremely rare Lengenbach minerals stalderite-ralphcannonite (this one, new species: IMA 2014-077) in a small matrix of realgar.Stalderite and ralphcannonite form a series, where stalderite is the Cu-end member and ralphcannonite is the Ag-end member. This crystal was analyzed by EDX and it is stalderite (61%) and ralphcannonite (39%).In addition, this specimen is a part of the type specimen of ralphcannonite (!), that is, the specimen that was used for the description of the species! Only very few specimens known of both species. After the book "Faszination Lengenbach (2008)" we know that the total number of stalderite specimens known was only 9! Specimen found in 1989. Mineral

Stalderite

stalderite

Formula
Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6
Mineral

Stanevansite

stanevansite

Formula
Mg(C2H3O3)2·2H2O
A very small yellow single crystal of the extremely rare Ca-Mg phosphate mineral stanfieldite from the type locality in the Estherville meteorite (Estherville Meteorite, Emmet County, Iowa, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Stanfieldite

stanfieldite

Formula
Ca4Mg5(PO4)6
White radvaniceite fibres formed cotton-like aggregates in association with orange stangersite crystals; locality, Radvanice; field of view, 5 mm; photo, J. Sejkora. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Stangersite

stangersite
Mineral

Stankeithite

stankeithite

Formula
MnMnTe⁴⁺4O10
Deep electric blue crystals of stanleyite, a rare vanadium sulphate mineral found in only two localities worldwide. From the type locality: Ragra Mine, Cerro de Pasco, Pasco Department, Peru. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Stanleyite

stanleyite

Formula
(V⁴⁺O)(SO4)·6H2O
Stannite is a relatively rare tin ore mineral. It has composition Cu2FeS4Sn (so it is smetimes called tin pyrite). This specimen contains dark gray-black dense fine grained stannite showing a metallic luster, typical for the mineral. Unfortunately, there are other minerals that appear quite similar, so distinguishing stannite without a chemical analysis is difficult. Quartz and pyrite are also present in this specimen. It is 8 cm across. Mineral

Stannite

stannite

Formula
Cu2FeSnS4
Silvery pink crystals of the rare Sn-mineral stannoidite from a Japanese locality (Akenobe Mine, Yabu City, Honshu Island, Japan) associated to golden chalcopyrite Mineral

Stannoidite

stannoidite

Formula
Cu6⁺Cu2²⁺(Fe²⁺,Zn)3Sn2S12