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Minerals

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Outstanding yellow very shiny microcrystals of the rare borate mineral preobrazhenskite from the type locality: Inder B Deposit, Atyrau, Atyrau Oblysy, Kazakhstan. Mineral

Preobrazhenskite

preobrazhenskite

Formula
Mg3B11O15(OH)9
Mineral

Pretulite

pretulite

Formula
Sc(PO4)
Mohs
5
Mineral

Prewittite

prewittite

Formula
KPb1.5ZnCu6O2(SeO3)2Cl10
These mineral images are free to use how you wish. Mineral

Priceite

priceite

Formula
Ca2B5O7(OH)5·H2O
A lot of small black single crystals of the very rare K-Ti oxide mineral priderite from the type locality in Australia: Walgidee Hills, Noonkanbak, Western Australia. Mineral

Priderite

priderite

Formula
K(Ti⁴⁺7Fe³⁺)O16
Photo of the azure princivalleite in reflected light: crystalline aggregates in pegmatitic vein in gneiss. Field of view ca. 12 cm × 12 cm. Sample deposited in the collections of the Natural History Museum of Milano, Italy. 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

Princivalleite

princivalleite

Mohs
7
Orangish crystals of the very rare calcium borate mineral pringleite from PCS Mine, Penobsquis, Kings County, New Brunswick, Canada. Pringleite has only been found worldwide in three very close localities in New Brunswick, Canada. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Pringleite

pringleite

Formula
Ca9B26O34(OH)24Cl4 * 13H2O
Mineral

Priscillagrewite-(Y)

priscillagrewite-(Y)
Mineral

Prismatine

prismatine

Formula
(☐,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
4.9 x 3.5 x 2.0 cm. Probertite is a rare hydrated borate and this famous mine is near the type locality. Dense sculptural sprays of pearlescent, tan needles with waxy lustre comprise this showy and excellent two-sided piece. Seldom available in this richness and quality. From U.S. Borax Mine, Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Mineral

Probertite

probertite

Formula
NaCaB5O7(OH)4·3H2O
Grains of Proshchenkoite-(Y) (Grain size up to 0.3 mm) Locality: Tommot, Yakutia, Russia Mineral

Proshchenkoite-(Y)

proshchenkoite-(Y)

Formula
Ca(Y,REE,Ca,Na,Mn)15Fe²⁺(P,Si)Si6B3O34F14
Mohs
5
Prosopite Locality: Santa Rosa Mine, Noche Buena, Municipio de Mazapil, Zacatecas, Mexico (Locality at mindat.org) Size: thumbnail, 1.9 x 1.5 x 1.1 cm Prosopite This is a rare, light sky blue, crudely crystallized, fluoride. Mineral

Prosopite

prosopite

Formula
CaAl2(F,OH)8
Mohs
4.5
Mineral

Prosperite

prosperite

Formula
Ca2Zn4(AsO4)4 * H2O
Mohs
4.5
Mineral

Protasite

protasite

Formula
Ba(UO2)3O3(OH)2·3H2O
White acicular crystals of the extremely rare mineral proto-anthophyllite from the type locality: Takase Mine, Shingo-takase, Niimi City, Okayama, Honshu Island, Japan. Proto-anthophyllite was found in A SINGLE DRILL CORE at the type locality. This is a part of the drill core as it can be seen perfectly in the photos. Alfredo Petrov specimen. Mineral

Proto-Anthophyllite

proto-anthophyllite

Formula
☐Mg2Mg5Si8O22(OH)2
Mineral

Proto-Ferro-Anthophyllite

proto-ferro-anthophyllite

Formula
☐Fe²⁺Fe²⁺5Si8O22(OH)2
Proto-ferro-suenoite is a very rare mineral known from only two localities (2016). It occurs acicular crystals in wheat formed aggregates together with rhodonite, pyroxmangite, spessartine and rhodochrosite at the type locality and as an small (sub-mm to mm) fibres as an alteration product of Mn-rich fayalite. This specimen was adquired in 2015 to A. Petrov. Very rare species. Locality: Suishoyama pegmatite, Iizaka, Kawamata, Fukushima, Japan Size: 2.5 × 1.8 × 1.6 cm Mineral

Proto-Ferro-Suenoite

proto-ferro-suenoite

Formula
☐Mn2²⁺Fe5²⁺Si8O22(OH)2
Mohs
5.5
Mineral

Proto-Owyheeite

proto-owyheeite

Formula
Ag9Pb40Sb45S112
Mineral

Protocaseyite

protocaseyite
An extremely rare thallium mineral in crystallized form (IMA 2011-054) as metallic black crystals. From: Monte Arsiccio Mine, Apuan Alps, Tuscany, Italy Mineral

Protochabournéite

protochabournéite

Formula
Tl2Pb(Sb,As)10S17
Colour
black
Mineral

Protoenstatite

protoenstatite

Formula
Mg2Si2O6
Metallic silvery crystals of the extremely rare sulfoselenide mineral proudite from one of the very few localities known worldwide (Janos Municipality, Chihuahua, Mexico). Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium. Mineral

Proudite

proudite

Formula
CuPb7.5Bi9.33(S,Se)22
Calcite, Proustite Locality: Chañarcillo, Copiapó Province, Atacama Region, Chile (Locality at mindat.org) Size: thumbnail, 3.0 x 2.0 x 1.9 cm Proustite with calcite This exceptionally gemmy piece , with association of calcite, is from the famus finds of the late 1800s and such are very rare! it is a colorful and showy speciment hat is affordable and doesnt break the bank, given that it has some admitted damage between the major crystals and has been priced down accordingly. But, its show value is high and it remains a very rare specimen Mineral

Proustite

proustite

Formula
Ag3AsS3
Mineral

Proxicosahedrite

proxicosahedrite

Formula
Al52Cu30Fe11Si7