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Mineralati

Minerals

6323 results

Mineral

Fanguangite

fanguangite

Formula
(MoO2)(PO3OH)·4H2O
Mineral

Fantappièite

fantappièite

Formula
[Na82.5Ca33K16.5]Σ=132(Si99Al99O396)(SO4)33·6H2O
Mineral

Farneseite

farneseite

Formula
(Na,Ca,K)56(Al6Si6O24)7(SO4)12·6H2O
Mineral

Farringtonite

farringtonite

Formula
Mg3(PO4)2
White crystals of the rare thiosulphate mineral fassinaite from Austria (Erasmus adit, Schwarzleo District, Schwarzleograben, Leogang, Salzburg, Austria) on a dark contrasting matrix. Ex. Erich Laskowski collection (USA). Mineral

Fassinaite

fassinaite

Formula
Pb2(CO3)(S2O3)
Mineral

Faujasite-Ca

faujasite-Ca

Formula
(Ca,Na,Mg)2(Si,Al)12O24·15H2O
Mineral

Faujasite-Mg

faujasite-Mg

Formula
(Mg,Na,K,Ca)2(Si,Al)12O24·15H2O
Faujasite-Na (FOV 3.6 x 2.4 mm) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada This is a child photo of File:Faujasite-Na-170873.jpg. Half of a stereo pair rotated by 90 degrees Mineral

Faujasite-Na

faujasite-Na

Formula
(Na,Ca,Mg)2(Si,Al)12O24·15H2O
Faustite Field of view: 8 mm Locality: Penjom Mine, Ampang Jaleh, Lipis District, Pahang, Malaysia Mineral

Faustite

faustite

Formula
ZnAl6(PO4)4(OH)8·4H2O
Grass green microcrystals of favreauite, an extremely rare mineral (IMA 2014-013) discovered at the El Dragon mine, Potosí, Bolivia. Favreauite is a selenite of formula PbBiCu6O4(SeO3)4(OH)·H2O. Only one locality known worldwide. Favreauite is the rarest of all selenites found at El Dragon. Very limited finding with a few specimens. Associated minerals are minoritary pink ahlfeldite and blue chalcomenite. Mineral

Favreauite

favreauite

Formula
PbBiCu6O4(SeO3)4(OH)·H2O
Fayalite with Tridymite balls on Cristobalite. Coso Hot Springs, Coso District (New Coso District), Inyo Co., California, USA - (XX1mm) Mineral

Fayalite

fayalite

Formula
Fe²⁺2SiO4
Charoite, Aegirine, Fedorite Dimension: 4,3 cm x 3,3 cm Locality: Vostochnyi Mine, Murun-Massif, Yakutia, Russia Description: Fibrous foliated Charoite aggregation with black radiating Aegirin („Aegirin suns“) and orange Fedorite crystals. Mineral

Fedorite

fedorite

Formula
(K,Na)2,5(Ca,Na)7Si16O38(OH,F)2·3,5H2O
Outstanding brown crystals of the very rare mineral fedorovskite from the type locality in Buryatia (Solongo, Ozernoe Area, Buryatia Republic, Russian Federation). Ex.Dr.Hartel collection with label included Mineral

Fedorovskite

fedorovskite

Formula
Ca2Mg2B4O7(OH)6
An electron micrograph of volcanic sublimates (minerals) in natural colors. Two different forms of copper molybdate Cu3O(MoO4)2 (cupromolybdite) – a mineral from fumarolic incrustations, Tolbachik, Kamchatka. Both forms of the mineral - bright yellow needles and massive brown crystals (right) - have the same composition and structure. The image also contains copper sulfate fedotovite K2Cu3O(SO4)3 (fine green crystals), langbeinite K2Mg2(SO4)3 (light gray crystals on top of the image), and palmierite (K, Na)2Pb(SO4)2 (light pseudohexagonal tabular crystals). Image size is 350 microns along the long side. Mineral

Fedotovite

fedotovite

Formula
K2Cu3(SO4)3O
Mohs
2.5
Colour
green
Fehrite is a recent new species found in Almeria (Spain). Some years ago (ca. 2012) we identified this species in the Les Ferreres mine (Camprodon) but unfortunatelly we didn't have enough sample to finish detrmination and structural studies. Recently we found some more samples and the characterization was carried out based on the results obtained from the application of various analytical techniques: SEM-EDS, Raman and X-ray diffraction. Les Ferreres mine is the second locality worldwide for the species. In this Catalan mine, fehrite appears as elongated elongated tabular crystals, with a delicate bluish-green tone, with fibrous terminations. Usually, it is accompanied by devilline (blue) and brochantite (green). It is the magnesium analogue of ktenasite. Mineral

Fehrite

fehrite
Mineral

Feiite

feiite

Formula
Fe²⁺2(Fe²⁺Ti⁴⁺)O5
Yellowish crystals of the extremely rare mineral feinglosite associated to also yellowish helmutwinklerite, both minerals typical of Tsumeb, but in this case from Vouves, Thasos Island, Macedonia Department, Greece. Both in a matrix of massive adamine. Specimen analyzed by SEM/EDS. Mineral

Feinglosite

feinglosite

Formula
Pb2Zn(AsO4)2·H2O
Grey brownish aggregates of the very rare Mn mineral feitknechtite associated to pinkish rhodonite from Japan (Fujii Mine, Wakasa-cho, Mikatakaminaka District, Fukui Prefecture, Honshu Island, Japan). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Feitknechtite

feitknechtite

Formula
Mn³⁺O(OH)
Mineral

Fejerite

fejerite
Mineral

Feklichevite

feklichevite

Formula
Na11Ca9(Fe³⁺,Fe²⁺)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5
Mineral

Felbertalite

felbertalite

Formula
Cu2Pb6Bi8S19
Axinit Quarz Feldspat Epidot aus Streigau, Schlesien, Polen Mineral

Feldspar

Formula
(K,Na,Ca)AlSi3O8 group
Mohs
6–6.5
Colour
White, pink, grey
Felsőbányait Field of view: 3 mm Locality: Prullans, Cerdanya, Catalunya, Spain Mineral

Felsőbányaite

felsőbányaite

Formula
Al4(SO4)(OH)10·4H2O
Mineral

Fenaksite

fenaksite

Formula
(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)