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Minerals

6323 results

Mineral

Flinteite

flinteite

Formula
K2ZnCl4
Florencite-(Ce), Uvite, Magnesite Locality: Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil (Locality at mindat.org) Size: 10.5 x 6.7 x 5.2 cm. Florencite-(Ce) is a very rare, rare-earth, cerium-rich phosphate. This fine cabinet combination specimen is covered with very glassy and lustrous, colorless magnesite rhombs to 1.0 cm. The highlight of this specimen, though, is the isolated, 6 mm, sharp, euhedral, straw-yellow florencite-(Ce) crystal on the right side of the piece and the scattered microcrystals. The sprinkling of gemmy, dark cherry-red uvite crystals to 5 mm is a nice bonus. Mineral

Florencite-(Ce)

florencite-(Ce)

Formula
CeAl3(PO4)2(OH)6
Florencite-(La) Locality: Igarapé Bahia Mine, Parauapebas, Carajás mineral province, Pará, North Region, Brazil Green crystals of Florencite-(La)(analysed). Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Florencite-(La)

florencite-(La)

Formula
LaAl3(PO4)2(OH)6
Bought at the Liège (belgium) show in 2010. This specimen comes from the stock of the late prof Van Wambeke, who did lot of mineral exploration and description. Collection and photo Erik Vercammen. From: Kiluli, Western Province, Rwanda. Mineral

Florencite-(Nd)

florencite-(Nd)

Formula
NdAl3(PO4)2(OH)6
Mineral

Florencite-(Sm)

florencite-(Sm)

Formula
(Sm,Nd)Al3(PO4)2(OH)6
Mineral

Florenskyite

florenskyite

Formula
FeTiP
Mineral

Florensovite

florensovite

Formula
Cu(Cr1.5Sb0.5)S4
Mohs
5
Colour
black
Fluckite (Mine Giftgrube, Neuenberg, Sainte-Marie-aux-Mines, Haut-Rhin). Musée de minéralogie de Strasbourg Mineral

Fluckite

fluckite
Fluellite Locality: Leveäniemi Mine, Svappavaara, Kiruna district, Lappland, Sweden (Locality at mindat.org) Colourless crystals of Fluellite. Field of view 6 mm. Specimen and photo Leon Hupperichs. Mineral

Fluellite

fluellite

Formula
Al2(PO4)F2(OH)(H2O)3·4H2O
Mohs
3
Colour
colorless, white, yellow
White acicular crystals of this rare fluoroborate from an Italian locality (Fiano, Lavorate (Nocera), Sarno, Campania, Italy). Mineral

Fluoborite

fluoborite

Formula
Mg3(BO3)(F,OH)3
Fluocerite-(Ce) Locality: Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA Yellowish-brown Fluocerite-(Ce). Field of view 15 mm. Specimen and photo Leon Hupperichs. Mineral

Fluocerite-(Ce)

fluocerite-(Ce)

Formula
CeF3
Mineral

Fluocerite-(La)

fluocerite-(La)

Formula
LaF3
Buergerite Locality: Mexquitic, San Luis Potosí, Mexico (Locality at mindat.org) Size: 1.5 x 1.0 x 1.0 cm. A rare, lustrous, doubly terminated, golden-brown and dark chocolate-brown buergerite crystal from the one-time fine in Mexico. A rare example of this tourmaline varietal that was found once, in the 1960s, by a miner who brought the lot to Tucson for sale. He died shortly thereafter and to my knowledge nobody has yet rediscovered his locality, an aberrant topaz-bearing rhyolite somewhere out in the desert in this region. In person, the crystals have a unique and characteristic golden sheen to them. This rarity is complete-all-around and nearly pristine. Mineral

Fluor-Buergerite

fluor-buergerite

Formula
Na(Fe³⁺3)Al6(Si6O18)(BO3)3O3F
Mohs
7
Mineral

Fluor-Dravite

fluor-dravite

Formula
NaMg3Al6(Si6O18)(BO3)3(OH)3F
Mohs
7
3.0 x 2.0 x 1.5 cm. Quite uncommon, fluor-elbaite has been found only a few places around the world. The crystals in this cluster are deep blue-green, with great luster and excellent terminations. The fluor-elbaites are gemmy to translucent, and the parallel growth of the crystals gives the specimen a very architectural look. This piece is considered among the best of species for this tourmaline variety (per Jim Houran, comments). A very fine specimen. Ex. James (Jim) Houran Collection. From: Arqueana pegmatite, Piauí valley, Taquaral, Itinga, Minas Gerais, Brazil. Mineral

Fluor-Elbaite

fluor-elbaite

Formula
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Mohs
7.5
Fluor-liddicoatite Field of view: 4 mm Locality: Tsarafara Nord, Sahatany Valley, Ibity, Antsirabe II District, Vakinankaratra, Madagascar (locality at mindat.org) Mineral

Fluor-Liddicoatite

fluor-liddicoatite

Formula
Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
Mohs
7.5
Fluor-rewitzerite crystal, FOV 0.10 mm (photo Christian Rewitzer). (b) Crystal drawing of fluor-rewitzerite crystal. Mineral

Fluor-Rewitzerite

fluor-rewitzerite

Formula
[(H2O)K]Mn2(Al2Ti)(PO4)4(OF)(H2O)10·4H2O
Mineral

Fluor-Rossmanite

fluor-rossmanite

Formula
◻(Al2Li)Al6(Si6O18)(BO3)3(OH)3F
Fluor-schorl Locality: Tennvatn pegmatite, Sørfold, Nordland, Norway Dimensions: 23 mm x 11 mm x 10 mm. Largest Crystal Size: 5 mm Description: One of the new members of the expanding tourmalinegroup. From rare-mineral dealer J.Hyrsl. Photo and collection Erik Vercammen Mineral

Fluor-Schorl

fluor-schorl

Formula
NaFe²⁺3Al6(Si6O18)(BO3)3(OH)3F
Mohs
7
Mineral

Fluor-Tsilaisite

fluor-tsilaisite

Formula
NaMn²⁺3Al6(Si6O18)(BO3)3(OH)3F
Mohs
7
Uvite Locality: Power's Farm (Bower Powers farm; Ryland Crary farm), Pierrepont, St Lawrence County, New York, USA (Locality at mindat.org) Size: 4.1 x 2.3 x 2.2 cm. A floater! This is a brilliant, high-quality doubly-terminated crystal, complete all around, and perched on quartz. This is as good as any I have seen for the size. Ex. American Museum of Natural History, Clarence Bement collection, donated in 1910. Mineral

Fluor-Uvite

fluor-uvite

Formula
CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F
Mohs
7.5
Mineral

Fluoralforsite

fluoralforsite

Formula
Ba5(PO4)3F
Mineral

Fluorannite

fluorannite

Formula
KFe²⁺3(AlSi3O10)(F,OH)2
fluorapatite var. violet fluorapatite, topaz var. champagne topaz, quartz : Shigar Valley, Skardu District, Baltistan, Gilgit-Baltistan (Northern Areas), Pakistan Mineral

Fluorapatite

fluorapatite

Formula
Ca5(PO4)3F
Mohs
5