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Minerals

6323 results

Mineral

Ferro-Fluoro-Edenite

ferro-fluoro-edenite
Mineral

Ferro-Fluoro-Pedrizite

ferro-fluoro-pedrizite

Formula
NaLi2(Fe²⁺2Al2Li)Si8O22F2
Mohs
6
Needles of ferro-gedrite on cleavage plane (001) of sekaninaite. Ferrogedrite is a product of weathering and decay of sekaninaite. From: Dolní Bory, Křižanov, Žďár nad Sázavou, Vysočina Region, Czech Republic. Mineral

Ferro-Gedrite

ferro-gedrite

Formula
☐{Fe²⁺2}{Fe²⁺3Al2}(Al2Si6O22)(OH)2
Dark blue needles of ferro-glaucophane from a former subduction zone; acquired from the late Dave Shannon at the Tucson Show in 1998. Locality: Groix island, Morbihan, Brittany, France. Collection and photo Erik Vercammen Mineral

Ferro-Glaucophane

ferro-glaucophane

Formula
☐Na2(Fe²⁺3Al2)Si8O22(OH)2
Mohs
6
Mineral

Ferro-Holmquistite

ferro-holmquistite

Formula
☐Li2(Fe²⁺3Al2)Si8O22(OH)2
Mohs
5.5
Ferrohornblende Locality: near Bilin, Bohemia, Czech Republic Size: thumbnail, 1.3 x 1.7 x 1.5 cm Ferrohornblende Just a nice sharp, stereotypical reference specimen Mineral

Ferro-Hornblende

ferro-hornblende

Formula
☐Ca2(Fe²⁺4Al)(Si7Al)O22(OH)2
Mineral

Ferro-Kaersutite

ferro-kaersutite

Formula
NaCa2(Fe²⁺3Ti⁴⁺Al)(Si6Al2)O22O2
Ferro-katophorite Field of view: 3 mm Locality: Azores, Portugal Mineral

Ferro-Katophorite

ferro-katophorite

Formula
Na(NaCa)(Fe²⁺4Al)(Si7Al)O22(OH)2
4.4 x 2.4 x 1.6 cm. Sodic-ferrogedrite is a very rare member of the Amphibole Group. Tiny, lustrous, gray-black, bladed grains comprise the spear-point-shaped piece. "In order to better distinguish between amphibole end-member member compositions, the CNMNC has decided to rename sodic-ferrogedrite. The name is not yet (Nov 2012) decided (MINDAT)". MINDAT lists only two localities worldwide for this varietal and neither is in Japan. MINDAT only lists ferro-gedrite for the Kawai Mine. Ex. Eugene Carmichael Collection. Possibly very rare material. Mineral

Ferro-Papikeite

ferro-papikeite
Ferropargasita. «Minas de Cala», Cala (Huelva, España). Mineral

Ferro-Pargasite

ferro-pargasite

Formula
NaCa2(Fe²⁺4Al)(Si6Al2)O22(OH)2
Mohs
5.5
Mineral

Ferro-Pedrizite

ferro-pedrizite

Formula
NaLi2(Fe²⁺2Al2Li)Si8O22(OH)2
Dark microcrystals of the very rare mineral ferro-richterite on a pale colored matrix from Libby, Libby Mining District, Montana, United States of America. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Ferro-Richterite

ferro-richterite

Formula
Na(NaCa)Fe²⁺5Si8O22(OH)2
Mineral

Ferro-Taramite

ferro-taramite

Formula
Na(NaCa)(Fe²⁺3Al2)(Si6Al2)O22(OH)2
Colour
green
Mineral

Ferro-Tschermakite

ferro-tschermakite

Formula
☐Ca2(Fe²⁺3Al2)(Si6Al2)O22(OH)2
Mineral

Ferroalluaudite

ferroalluaudite

Formula
NaFe²⁺Fe³⁺2(PO4)3
Small balls of this rare mica, occurring in a weird assemblage with beryl, sellaite pyrite and topaz (all a bit obscure in this photo). Found by Andrew Tuma. ID by XRD and SEM-EDAX (R. Bottrill). From: Slaughteryard face, Mount Bischoff mine, Waratah, Waratah district, Waratah-Wynyard municipality, Tasmania, Australia. Mineral

Ferroaluminoceladonite

ferroaluminoceladonite

Formula
K(Fe²⁺,Mg)(Al,Fe³⁺)(Si4O10)(OH)2
Ferroberaunite in olive-green acicular crystals on ‘limonite’ matrix. Holotype specimen (catalogue number P1P 11/2021). FOV 2 mm across. Photo by L. Vrtiška. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Mineral

Ferroberaunite

ferroberaunite

Formula
Fe²⁺Fe³⁺5(PO4)4(OH)5(H2O)4·2H2O
Mineral

Ferrobobfergusonite

ferrobobfergusonite

Formula
Na2Fe²⁺5Fe³⁺Al(PO4)6
Ferrobustamite Field of view: 0.5 mm high Locality: Lichtloch 25, Hettstedt, Mansfeld-Südharz, Saxony-Anhalt, Germany Mineral

Ferrobustamite

ferrobustamite
Mineral

Ferrocarpholite

ferrocarpholite

Formula
(Fe²⁺,Mg)Al2(Si2O6)(OH)4
The specimen is roughly 4 x 5 x 3 cm. Found Sept 1996. MOB coll. Ferroceladonite (the green stuff) is not really common at MSH (Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada). But when found it covers everything! Here it is covering smoky quartz xls (to about 1 cm) and microcline. The broken smoky quartz xls along the edges look almost black. Mineral

Ferroceladonite

ferroceladonite

Formula
K(Fe²⁺,Mg)(Fe³⁺,Al)(Si4O10)(OH)2
Mineral

Ferrochiavennite

ferrochiavennite

Formula
Ca1-2Fe[(Si,Al,Be)5Be2O13(OH)2]·2H2O
Mohs
3
Colour
light green, beige, yellow
(a) Sulfide nodule from the central part of the paralava body, on the contact of which karwowskiite was found. Fragment magnified in (b,c) is underlined by frame. (b,c) Differentiated sulfide nodule composed of pentlandite and troillite zones with inclusions of tetrataenite and nickelphosphide. (b)—reflected light, (c)—BSE image; fragments magnified in (d,e) are marked in frames. (d,e) Rare karwowskiite crystals are noted only on the boundary of sulfide nodules and paralava. (d)—reflected light, (e)—BSE image. An = anorthite, Di = diopside, Fap = fluorapatite, Fdmol = ferrodimolybdenite, Krw = karwowskiite, Mol = molybdenite, Nic = nickelphosphide, Pnl = pentlandite, Ttae = tetrataenite, Tro = troilite. Mineral

Ferrodimolybdenite

ferrodimolybdenite

Formula
FeMo2S4
Mineral

Ferroefremovite

ferroefremovite