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Minerals

6323 results

Amesite Locality: Saranovskii Mine (Saranovskoe), Saranovskaya (Sarany) Village, Gorozavodskii area, Permskaya Oblast', Middle Urals, Urals Region, Russia (Locality at mindat.org) Size: 4.8 x 4.3 x 2.3 cm. Amesite is a rare kaolinite-serpentine group silicate mineral. Chrome amesite is even rarer. Chrome amesite plates, with scintillating, metallic-lavender lustre, richly covers matrix on this very showy specimen from the Saranovskii Mine of Ural. Mineral

Amesite

amesite

Formula
Mg2Al(AlSiO5)(OH)4
Geodes at rock and gem show, Oregon Mineral

Amethyst

Formula
SiO2
Mohs
7
Colour
Purple
Aggregates of amgaite. Polished section. SEM (BSE) images. (a) botryoidal aggregate (b) fragments of colloform aggregates. 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

Amgaite

amgaite
Outstanding colorless crystals of the rare mineral amicite from the type locality (Höwenegg Quarry, Hegau, Baden-Württemberg, Germany). Mineral

Amicite

amicite

Formula
K2Na2(Al4Si4O16)·5H2O
Mohs
4.5
Picture width 1.5 mm. Collection and photograph Christian Rewitzer. From Långban, Filipstad, Värmland, Sweden Mineral

Aminoffite

aminoffite

Formula
Ca3(BeOH)2Si3O10
Sky blue ammineite crystals (a mineral with amine groups, IMA 2008-032) in a matrix of halite. From: Pabellon de Pica, Chanabaya, Iquique Province, Tarapacá Region, Chile. Mineral

Ammineite

ammineite

Formula
CuCl2·2NH3
Pale brown crystal aggregates of the rare mineral ammonioalunite from Kladno (Kladno District, Central Bohemian Region, Czech Republic). Mineral

Ammonioalunite

ammonioalunite

Formula
(NH)4Al3(SO4)2(OH)6
White small aggregate of the rare mineral ammonioborite from the type and only known locality worldwide in Larderello, Italy (Larderello, Pomarance, Pisa Province, Tuscany, Italy). Ex. Erich Laskowski collection (USA). Mineral

Ammonioborite

ammonioborite

Formula
(NH4)3B15O20(OH)8·4H2O
Mineral

Ammoniojarosite

ammoniojarosite

Formula
(NH)4Fe³⁺3(SO4)2(OH)6
Mineral

Ammoniolasalite

ammoniolasalite

Formula
[(NH4)2Mg2(H2O)20] [V10O28]
Mineral

Ammonioleucite

ammonioleucite

Formula
(NH4)AlSi2O6
Mineral

Ammoniomagnesiovoltaite

ammoniomagnesiovoltaite

Formula
(NH4)2Mg5Fe³⁺3Al(SO4)12·18H2O
Mineral

Ammoniomathesiusite

ammoniomathesiusite

Formula
(NH4)5(UO2)4(SO4)4(VO5)4·H2O
Mineral

Ammoniotinsleyite

ammoniotinsleyite
Mineral

Ammoniovoltaite

ammoniovoltaite

Formula
(NH4)2Fe²⁺5Fe³⁺3Al(SO4)12(H2O)18
Outstanding yellow crystals of the rare uranium mineral ammoniozippeite associated to green johannite, from Blue Lizard Mine, Red Canyon, San Juan County, Utah, United States of America. Mineral

Ammoniozippeite

ammoniozippeite

Formula
(NH4)2[(UO2)2(SO4)O2]*H2O
Mineral

Amoraite

amoraite

Formula
Ca12Al6(OH)36(CO3)2(SO3)·15H2O
White prismatic crystals of the very rare mineral amstallite from the type locality in Amstall (Graphite Quarry, Amstall, Krems-Land District, Lower Austria, Austria ) associated to other unidentified white minerals, probably alunogen/pickeringite. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Amstallite

amstallite

Formula
CaAl[(Al,Si)4O8(OH)2](OH)2·(H2O,Cl)
Mohs
4
Mineral

Amurselite

amurselite

Formula
(NH4)2(UO2)5(SeO3)3O2(OH)2(H2O)·8H2O
Colorless to reddish crystals of analcime up to 1.8 cm in size on matrix (4.0 × 3.0 × 2.0 cm). Found from Kahwan Mountain, Semnan, Iran Mineral

Analcime

analcime

Formula
Na(AlSi2O6)·H2O
Mineral

Anandite

anandite

Formula
BaFe²⁺3(Si3Fe³⁺)O10S(OH)
Anapaite Locality: Kerch, Crimean Peninsula, Ukrainia Gorgeous, GEMMY and translucent rosettes of anapaite crystals that have formed inside fossil clams in a bizarre phosphate pod deposit! This locality is now mined through and specimens are hard to obtain. These crystals are to 1 cm in size. Mineral

Anapaite

anapaite

Formula
Ca2Fe²⁺(PO4)2·4H2O
Mohs
3.5
Mineral

Anastasenkoite

anastasenkoite
Mineral

Anatacamite

anatacamite