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Mineralati

Minerals

6323 results

Ferrosilite Locality: Lake Tarawera Area, Bay of Plenty, North Island, New Zealand Acicular crystals of ferrosilite (not analysed) from Terawera Rift/Lake Terawera southeast Rotorua. Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Ferrosilite

ferrosilite
Mineral

Ferroskutterudite

ferroskutterudite

Formula
(Fe,Co)As3
Mineral

Ferrostalderite

ferrostalderite

Formula
CuFe2TlAs2S6
FOV 3.6 x 2.5 mm. MOB coll. The label says “Hanover Twp Burlington Co NJ”. But according to Chet Lemanski the actual locality is “near a rural 3 county line junction ... on, under and near a golf course ... on the north (Monmouth Co.) side of the [county] line ..." Mineral

Ferrostrunzite

ferrostrunzite

Formula
Fe²⁺Fe³⁺2(PO4)2(OH)2·6H2O
Mineral

Ferrotaaffeite-2N'2S

ferrotaaffeite-2N'2S

Formula
(Fe²⁺,Mg,Zn)3Al8BeO16
Mineral

Ferrotaaffeite-6N'3S

ferrotaaffeite-6N'3S

Formula
BeFe²⁺2Al6O12
Mineral

Ferrotellurite

ferrotellurite

Formula
Fe(Te⁶⁺O4) (?)
Mineral

Ferrotitanowodginite

ferrotitanowodginite

Formula
Fe²⁺TiTa2O8
Mineral

Ferrotochilinite

ferrotochilinite

Formula
[FeS]·≈0.85[Fe²⁺(OH)2]
A backscattered electron image (BSE) showing a rounded, subhedral grain of iridium enriched in Os (labeled Ir-Os) which hosts globular or elongate inclusions of PGE- and base-metal sulfides (gray in the BSE) from the River Ko placer. An intermediate member of the ferrotorryweiserite–torryweiserite series (labeled Ftyw) occurs as a portion of a composite and partial rim deposited around an olivine-plagioclase core (dark gray in the BSE), which includes skeletal forms of titaniferous augite. The host is epoxy. 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

Ferrotorryweiserite

ferrotorryweiserite

Formula
Rh5Fe10S16
Yellow crystals of the very rare Na-Fe carbonate-sulphate mineral ferrotychite from the TL in Khibiny (Olenii Ruchei, Khibiny Massif, Murmansk Oblast, Russian Federation) and only one of the two known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Ferrotychite

ferrotychite

Formula
Na6Fe²⁺2(CO3)4(SO4)
Mineral

Ferrovalleriite

ferrovalleriite

Formula
2[(Fe,Cu)S]·1.53[(Fe,Al,Mg)(OH)2]
Mineral

Ferrovorontsovite

ferrovorontsovite

Formula
(Fe5Cu)∑6TlAs4S12
Many small black aggregates of the very rare Sn-Ta oxide mineral ferrowodginite from a locality in Uganda (Nyanga #2 Pegmatite, Ankole, Mbarara District, Western Region, Uganda). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Ferrowodginite

ferrowodginite

Formula
Fe²⁺Sn⁴⁺Ta2O8
7.4 x 6.4 x 3.8 cm. Ferrowyllieite is a very rare phosphate found at only three localities worldwide and this rich specimen is from the Type Locality in South Dakota. Lustrous, laminated, black crystal sections to about 2.2 cm are embedded in feldspar matrix on all sides of this piece. Not pretty to look at, but this is a very highly representative and rich example of the rare species from the locale. Mineral

Ferrowyllieite

ferrowyllieite

Formula
(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3
Figure 2. (a,b) Optical microscopy images of a paralava vein filled with light-yellow crystals of ferroåkermanite and dark-yellow aggregates of ferroåkermanite–gehlenite intergrowths (a – plane polarized light) Mineral

Ferroåkermanite

ferroåkermanite

Formula
Ca2FeSi2O7
Ferruccite (white) on Avogadrite (yellow-brownish), picture size: 5 mm Locality: Vesuvius, Italy Mineral

Ferruccite

ferruccite

Formula
NaBF4
Mohs
3
Fersmanite Size: 6 x 4.5 x 2.5 cm Locality: Vein No. 1 of Labuntsov, 3rd left tributary of Vuonnemijok river, Eveslogchorr Mt, Khibiny Massif, Kola peninsula, Murmanskaja oblast', Northern Region, Russia An amazing example for the species (named after the Fersman Museum founder), from this the type locality! These two specimens recently released from the Fersman hoard are FAR beyond anything they have sold previously. This piece features a crystal measuring a whopping 10 x 8 mm! Mineral

Fersmanite

fersmanite
Size crystal mm.0,45 very nice. Collection and photo Edoardo Mazzola. From: Alpe Rosso, Orcesco, Druogno, Vigezzo Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy Mineral

Fersmite

fersmite

Formula
CaNb2O6
Black sharp crystal of the very rare member of the tourmaline group feruvite from the type locality in New Zealand (Repanga Island (Cuvier Island),, Thames-Coromandel District, Waikato Region, New Zealand). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Feruvite

feruvite

Formula
Ca(Fe²⁺)3MgAl5(Si6O18)(BO3)3(OH)3(OH)
Mohs
7
Yellow green crystals of the rare vanadium mineral fervanite from Joe Dandy Mine (Montrose County, Colorado, United States of America). Mineral

Fervanite

fervanite

Formula
Fe³⁺4V⁵⁺4O16·5H2O
Outstanding black crystals of the rare Binntal mineral fetiasite from the type locality in Gorb (Lercheltini Area, Binn valley, Wallis, Switzerland). Fetiasite is an arsenite. Mineral

Fetiasite

fetiasite

Formula
(Fe³⁺,Fe²⁺,Ti)3(As2O5)O2
Fettelite - group of tiny Fettelite xx on vug (0.6 mm across) from an unknown mine but somewhere in Chañarcillo district - FOV 2x2 mm Mineral

Fettelite

fettelite

Formula
[Ag6As2S7][Ag10HgAs2S8]
Mineral

Feynmanite

feynmanite

Formula
Na(UO2)(SO4)(OH)·3.5H2O