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Minerals

6323 results

Mangani-obertiite (formerly Obertiite), Amphibole Supergroup Field of view: 0.5 mm Locality: Rothenberg Quarry, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany (locality at mindat.org) Mineral

Ferri-Obertiite

ferri-obertiite

Formula
Na(Na2)(Mg3Fe³⁺Ti)(Si8O22)O2
Mineral

Ferri-Pedrizite

ferri-pedrizite

Formula
NaLi2(Fe³⁺2Mg2Li)Si8O22(OH)2
Mineral

Ferri-Taramite

ferri-taramite

Formula
Na(NaCa)(Mg3Fe³⁺2)(Si6Al2)O22(OH)2
La 'imerinita' es un nombre otorgado por Lacroix (ca 1913) a un miembro del supergrupo de los anfíboles, de color azul negruzco a azul lavanda que se presentaba en forma de cristales aciculares en una caliza metamórfica situada cerca de Ambatoarina (Madagascar). Lacroix (según la nomenclatura de anfíboles de la época) determinó que tenía una composición intermedia entre la richterita y la glaucofana. Lo denominó 'imerinita' por el nombre del antiguo reino de Merina en las tierras altas de Madagascar, Imerina. El nombre fue desacreditado en 1978 al considerarse un sinónimo de magnesio-arfvedsonita. La magnesio-arfvedsonita fue redefinida/renombrada por la IMA en 2014. Una muestra etiquetada como "Imerinita, Imerina, Madagascar", con cristales individuales aplanados de color azul oscuro a casi negro incluídos en dolomita, fue analizada por RRUFF resultando ser ferri-winchita (RRUFF ID: R060038). Para añadir interés a este ejemplar, este se acompaña de dos etiquetas históricas. Una de la conocida tienda Deyrolle de ciencias naturales y otra, manuscrita, de la colección Jean Chervet (1904-1962). Chervet fue director del servicio de mineralogía del Commissariat à l'Énergie Atomique (CEA) de Francia durante la década de 1950 y principios de la de 1960. Desempeñó un papel fundamental en el estudio y la prospección de los yacimientos de uranio en Francia y en territorios africanos como Gabón y Madagascar. En su honor se nombró el mineral chervetita, descubierto en la mina de Mounana (Gabón) y descrito oficialmente en 1963. Medidas: 6.7 x 4 x 2.7 cm. Cristal principal: 29 mm. Col. J. Chervet #1973. Mineral

Ferri-Winchite

ferri-winchite

Formula
☐(NaCa)(Mg4Fe³⁺)Si8O22(OH)2
Mohs
5.5
Colour
black
Figure 1. Ferriakasakaite-(Ce), as prismatic crystals in calcite, up to 1 mm long. Collection Museo di Storia Naturale, University of Pisa (catalogue number 19903). Mineral

Ferriakasakaite-(Ce)

ferriakasakaite-(Ce)

Formula
{CaCe}{Fe³⁺AlMn²⁺}(Si2O7)(SiO4)O(OH)
Ferriakasakaite-(La) and ferriandrosite-(La) crystal. These two minerals are visually indistinguishable, and are also identical in appearance as vanadoallanite-(La). In fact, ferriakasakaite-(La) and ferriandorosite-(La) were identified during an attempt to identify more vanadoallanite-(La) for further studies. All three minerals are found in the same rhodochrosite/tephroite veins in a ferromanganian ore. The photo is from the type material and is taken by Dr. Daisuke Nishio-Hamane, one of the co-authors of the species. Mineral

Ferriakasakaite-(La)

ferriakasakaite-(La)

Formula
CaLaFe³⁺AlMn²⁺(Si2O7)(SiO4)O(OH)
A specimen containing ferriallanite-(Ce), as a dark brown to black layer up to 3 cm wide, in contact with greenish-white, fibrous amphibole and newly formed weathering products around the edges, from Nya Bastnäs, Sweden. Photo by Kamil Sobek. Mineral

Ferriallanite-(Ce)

ferriallanite-(Ce)

Formula
CaCe(Fe³⁺,Fe²⁺,Al)3[SiO4][Si2O7]O(OH)
Mineral

Ferriallanite-(La)

ferriallanite-(La)

Formula
Ca(La,Ce,Th)(Fe³⁺,Al)(Al,Fe³⁺)(Fe²⁺,Mn,Ti,Mg)(SiO4)(Si2O7)O(OH)
Dark brown aggregate of ferriandrosite-(Ce) enclosed in pyroxmangite (light pink)–spessartine (light yellow) matrix. Field of view is 2.06 mm. Photo L. Hrdlovič. Holotype material (P1P 2/2023, polished section Be-5). Mineral

Ferriandrosite-(Ce)

ferriandrosite-(Ce)

Formula
(Mn2+Ce)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)
Ferriakasakaite-(La) and ferriandrosite-(La) crystal. These two minerals are visually indistinguishable, and are also identical in appearance as vanadoallanite-(La). In fact, ferriakasakaite-(La) and ferriandorosite-(La) were identified during an attempt to identify more vanadoallanite-(La) for further studies. All three minerals are found in the same rhodochrosite/tephroite veins in a ferromanganian ore. The photo is from the type material and is taken by Dr. Daisuke Nishio-Hamane, one of the co-authors of the species. Mineral

Ferriandrosite-(La)

ferriandrosite-(La)

Formula
MnLaFe³⁺AlMn²⁺(Si2O7)(SiO4)O(OH)
Yellow crystals of the extremely rare mineral ferribushmakinite (IMA 2014-055) associated to pale green crystals of the also very rare mineral zinclipscombite (IMA 2006-008) on a matrix of quartz. Both minerals, ferribushmakinite and zinclipscombite are minerals found in only one locality worldwide, that is of course the type locality. From: Silver Coin Mine, Valmy, Nevada, United States of America. Mineral

Ferribushmakinite

ferribushmakinite

Formula
Pb2Fe³⁺(PO4)(VO4)(OH)
Mineral

Ferricerite-(Laca)

ferricerite-(LaCa)

Formula
(La6Ca3)􏰀Fe³⁺(SiO4)3(SiO3OH)4(OH)3
Mineral

Ferricopiapite

ferricopiapite

Formula
Fe5(SO4)6O(OH)·20H2O
Greyish brown crystals of the very rare Pb-Mn mineral ferricoronadite (IMA 2015-093) from one of the only two known localities worldwide: Cowshill, Weardale, County Durham, United Kingdom. Mineral

Ferricoronadite

ferricoronadite

Formula
Pb(Mn4+6Fe³⁺2)O16
Mineral

Ferrierite-K

ferrierite-K

Formula
(K,Na)5(Si31Al5)O72·18H2O
Ferrierite-Mg Locality: Kamloops Lake, Kamloops Mining Division, British Columbia, Canada (Locality at mindat.org) Size: 5 x 4 x 1.5 cm. An exceptional radial ball of the rare zeolite Ferrierite. The burnt-orange color and luster are both excellent, but to find such a ball .7 cm across is almost unheard of on the open market! Ex. Charlie Key stock. Mineral

Ferrierite-Mg

ferrierite-Mg

Formula
[Mg2(K,Na)2Ca0.5](Si29Al7)O72·18H2O
Ferrierite-Na Locality: Libous quarry, Chomutov, Ústí Region, Bohemia (Böhmen; Boehmen), Czech Republic Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Ferrierite-Na

ferrierite-Na

Formula
(Na,K)5(Si31Al5)O72·18H2O
Tan acicular crystals of the extremely rare mineral ferrierite-NH4 (IMA 2017-099) from one of the only three known localities worldwide: Jenišův Újezd, Bílina, Teplice, Ústí nad Labem Region, Czech Republic. Mineral

Ferrierite-Nh4

ferrierite-NH4

Formula
(NH4,Mg0.5)5(Al5Si31O72)·22H2O
Hollandite, Quartz Locality: Ultevis, Lappland, Sweden (Locality at mindat.org) Size: small cabinet, 6.3 x 4.3 x 2.8 cm Hollandite in Quartz Unusual, elongated, robust crystals of hollandite frozen in quartz matrix. Very odd for the species. I had not seen crystals in this style before. Ex. John White Collection. Mineral

Ferrihollandite

ferrihollandite

Formula
Ba(Mn⁴⁺6Fe⁺2)O16
Ferrihydrite Field of view: 3 mm Locality: Kupferkammer Smelter, Hettstedt, Saxony-Anhalt, Germany Mineral

Ferrihydrite

ferrihydrite

Formula
Fe³⁺10O14(OH)2
Adamite (Var.: Cuprian Adamite), Ferrilotharmeyerite, Beaverite-(Cu) Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: 3.4 x 2.9 x 1.3 cm. There are numerous gemmy, deep green crystals of cuprian adamite, some doubly terminated to about 1 cm in length! The crystals have inclusions of Ferrilotharmeyerite which lends them color. Sprinkling them are sub-mm sized, but bright yellow beaverite. Ex. Willy Israel Collection. Mineral

Ferrilotharmeyerite

ferrilotharmeyerite

Formula
CaZnFe³⁺(AsO4)2(OH)·H2O
Mohs
3
Mineraly.sk - ferrimolybdit Mineral

Ferrimolybdite

ferrimolybdite

Formula
Fe³⁺2(Mo⁶⁺O4)3·7H2O
Mineral

Ferrimuirite

ferrimuirite

Formula
Ba10(Ca2Fe³⁺2)[Si8O24]O2Cl10
Ferrinatrite - Spain, Andalusia, Almería, Villaricos, Mina Golosina - 2 mm. Photos from tomeikminerals.com can be used under a Creative Commons Licenese 4.0 CC-BY, as explained in: https://www.tomeikminerals.com/about-me. Mineral

Ferrinatrite

ferrinatrite

Formula
Na3Fe(SO4)3·3H2O