Skip to content
Mineralati

Minerals

6323 results

Mineral

Oxybismutomicrolite

oxybismutomicrolite

Formula
(Bi1.33☐0.67)Ta2O6O
Mineral

Oxycalciomicrolite

oxycalciomicrolite

Formula
Ca2Ta2O7
Sharp orange octahedral crystals of the new mineral oxicalciopyrochlore from one of the very few known localities worldwide. From: Schelingen, Kaiserstuhl, Baden-Württemberg, Germany. Mineral

Oxycalciopyrochlore

oxycalciopyrochlore

Formula
Ca2Nb2O6O
Mohs
5
Very small black crystals of the new mineral oxycalcioromeite (IMA2012-022) from the type locality (Buca Della Vena Mine, Apuan Alps, Lucca Province, Tuscany, Italy) and only one of the two localities known worldwide. Mineral

Oxycalcioroméite

oxycalcioroméite

Formula
Ca2Sb2O6O
:A very interesting piece under the microscope. Vesicles in this olivine nephelinite contain microcrystals of orange-brown, prismatic to platy oxykinoshitalite associated with nepheline, calcite, and an apatite group mineral. An unassuming specimen in hand sample, but fairly remarkable under modest magnification. Oxykinoshitalite is a rare and complex barium potassium magnesium titanium iron layer silicate and a member of the Mica Group. Ex. Paulo Matioli collection. 3.0 x 2.0 x 1.0 cm. From: Fernando de Noronha island, Fernando de Noronha archipelago, Pernambuco, Brazil. Mineral

Oxykinoshitalite

oxykinoshitalite

Formula
BaMg2Ti⁴⁺O2(Si2Al2)O10
Mineral

Oxynatromicrolite

oxynatromicrolite

Formula
(Na,Ca,U)2(Ta,Nb)2O6(O,F)
Oxiphlogopite with calcite - Germany, Rhineland-Palatinate, Eifel, Bell, Am Rothenberg Quarry (TL) - 2 mm Photos from tomeikminerals.com can be used under a Creative Commons Licenese 4.0 CC-BY, as explained in: https://www.tomeikminerals.com/about-me. Mineral

Oxyphlogopite

oxyphlogopite

Formula
K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2
Mineral

Oxyplumbopyrochlore

oxyplumbopyrochlore

Formula
Pb2Nb2O6O
Oxyplumboroméite, Cerussite, Fluorite Locality: Sierra Minera de Cartagena-La Unión, La Unión, Murcia, Spain Pseudomorphosis of oxyplumboroméite after bournonite from a unknown (for me) mine of Sierra Gorda (Cartagena). Note the small Fluorite crystal (this mineral is common in that location) and cerussite Mineral

Oxyplumboroméite

oxyplumboroméite

Formula
Pb2Sb2O7
Mohs
5
Albite, Stannomicrolite, Stokesite Locality: Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: miniature, 4.1 x 3.3 x 3.0 cm Stokesite with Stannomicrolite on Albite ex. Dr. Mark Feinglos Collection An excellent example of both of these species from an important find brought to market by Carlos Barbosa before he passed away , in the late 1990s. I recall when these came out, it was almost impossible to find even a single specimen with both the Stokesite (the sharp white xls) and the stannomicrolite (brown crystal) on the same specimen - let alone in close proximity. This is an aesthetic representation of both species, in unusual association, on a well trimmed matrix of bladed albite so it displays nicely. Both crystals are of unusually good size for the find, as well. Mineral

Oxystannomicrolite

oxystannomicrolite

Formula
Sn2Ta2O6O
Mineral

Oxystibiomicrolite

oxystibiomicrolite

Formula
(Sb³⁺,Ca)2Ta2O6O
Mohs
5.5
Mineral

Oxyvanite

oxyvanite

Formula
V³⁺2V⁴⁺O5
Mineral

Oxyyttrobetafite-(Y)

oxyyttrobetafite-(Y)

Formula
Y2Ti2O6O
Mohs
5
Oyelite, Calcite Locality: N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa (Locality at mindat.org) Size: 4.5 x 2.6 x 2.4 cm. A very aesthetic cluster with a central oyelite crystal of 11mm, flanked by smaller ones. Mineral

Oyelite

oyelite

Formula
Ca10Si8B2O29 * 12.5H2O
Oyonite occurs as black subhedral to anhedral crystals, up to 100 μm in length. Streak is black, and the luster is metallic. Andorite-like minerals occurring with orpiment on calcite. The crystals are not a single phase but a mixture of mainly different andorite-group minerals (i.e., oyonite, menchettiite, …). The width is 1 mm. Photo by Christian Rewitzer. Mineral

Oyonite

oyonite

Formula
Ag3Mn2Pb4Sb7As4S24
Colour
black
Mineral

Ozernovskite

ozernovskite
Mineral

Ozerovaite

ozerovaite

Formula
Na2KAl3(AsO4)4
Mineral

Paarite

paarite

Formula
Cu1.7Pb1.7Bi6.3S12
Mineral

Pabellóndepicaite

pabellóndepicaite

Formula
Cu²⁺2(N3C2H2)2(NH3)2(NO3)Cl·2H2O
Pabstite is a very rare Ba-Sn-Ti mineral, only known from 4 localities worldwide, being this one from the type locality: Pacific Cement Quarry, Santa Cruz, Santa Cruz County, California, United States of America. It occurs in this specimen as tan crystal aggregates. Ex.F.Bauer collection. Mineral

Pabstite

pabstite

Formula
BaSnSi3O9
Mineral

Paceite

paceite

Formula
CaCu(CH3COO)2·6H2O
Mohs
1.5
Pachnolite Locality: Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland (Locality at mindat.org) Picture width 1.5 mm. Collection and photograph Christian Rewitzer Mineral

Pachnolite

pachnolite

Formula
NaCaAlF6(H2O)
Mohs
3
Mineral

Packratite

packratite

Formula
Ca11(H2O)59(As³⁺V⁵⁺10V⁴⁺2As⁵⁺6O51)2∙24H2O
Thin green platelettes of paddlewheelite coating chalcopyrite and andersonite. Horizontal field of view is 2 mm. Photo by Stephan Wolfsried. The image belongs to the article "Paddlewheelite, a New Uranyl Carbonate from the Jáchymov District, Bohemia, Czech Republic", 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

Paddlewheelite

paddlewheelite

Formula
MgCa5Cu2(UO2)4(CO3)12(H2O)33