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Mineralati

Minerals

6323 results

Pale yellow-white inclusions of the rare mineral katayamalite in a matrix of albite and sugilite from the type locality for the mineral. Easily identifiable by shortwave UV light. From: Iwagi Island, Setonaikai, Ehime Prefecture, Japan. Mineral

Katayamalite

katayamalite

Formula
KLi3Ca7Ti2(SiO3)12(OH)2
Katerinopoulosite Field of view: 8 mm Locality: Esperanza Mine, Lavrion, Lavrion District, Attica, Greece (locality at mindat.org) Mineral

Katerinopoulosite

katerinopoulosite

Formula
(NH4)2Zn(SO4)2*6H2O
Mineral

Katiarsite

katiarsite

Formula
KTiO(AsO4)
Katoite Locality: Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany Clear globular katoite on magnetite. Field of view 3 mm. Specimen and photo Leon Hupperichs. Mineral

Katoite

katoite

Formula
Ca3Al2(SiO4)3-x(OH)4x (x = 1.5-3)
Black crystals of the rare mineral katophorite on a contrasting whitish matrix from Monte Somma, Vesuvius, Campania, Italy. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Katophorite

katophorite

Formula
Na(NaCa)(Mg4Al)(Si7Al)O22(OH)2
Orange crystal aggregates of the rare mineral katoptrite from the type locality in Jakobsberg, Sweden (Jakobsberg Mine, Nordmark, Filipstad, Värmland County, Sweden). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Katoptrite

katoptrite

Formula
(Mn²⁺,Mg)13(Al,Fe³⁺)4Sb5+2(SiO4)2O20
Indistinct crystals and crystal aggregates of white katsarosite grown directly on sphalerite. An overlaying epsomite layer has been removed by dissolution in deionized water. 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

Katsarosite

katsarosite

Formula
Zn(C2O4)⋅2H2O
Black crystal aggregates of the very rare bismuth selenide telluride mineral kawazulite from Blue Bell Mine, Zzyzx, Soda Mountains, San Bernardino County, California, United States of America. Mineral

Kawazulite

kawazulite

Formula
Bi2Te2Se
Mohs
1.5
Mineral

Kayrobertsonite

kayrobertsonite

Formula
[MnAl2(PO4)2(OH)2(H2O)4]*2H2O
Kayupovaite (Kyp) aggregate in calcite (Cal)–rhodonite (Rdn) rock: (a) hand specimen Ush318-106 – a veinlet made by a parallel-lamellar aggregate of kayupovaite. The sample is oriented nearly parallel to the plane of the vein. (b) Scanning electron microscope–backscatter electron image (SEM BSE) image – calcite veinlets inside kayupovaite aggregate. (c) Parallel-polarized light and (d) cross-polarized light – clusters of lamellar kayupovaite crystals. Mineral

Kayupovaite

kayupovaite

Formula
Na2Mn10[(Si14Al2)O38(OH)8]·7H2O
Black spheres of kazakhstanite on matrix from the 5425 Bench, Gold Quarry Mine (Maggie Creek Subdistrict, Carlin Trend, Eureka Co., Nevada, USA). Field of view 4 mm. Mineral

Kazakhstanite

kazakhstanite

Formula
Fe³⁺5V4+3V5+12O39(OH)9 * 9H2O
Yellow kazakovite with white thermonatrite. Field of view 3 mm. From: Kedykverpakhk Mt, Lovozero Massif, Murmansk Oblast, Russia. Mineral

Kazakovite

kazakovite

Formula
Na6Mn²⁺Ti(Si6O18)
Mineral

Kazanskyite

kazanskyite

Formula
Ba☐TiNbNa3Ti(Si2O7)2O2(OH)2(H2O)2
Mineral

Kaznakhtite

kaznakhtite
Outstanding yellow crystals of the rare arsenate mineral kaňkite from the type locality in Kaňk, Kutná Hora (Kuttenberg), Bohemia, Czech Republic. Mineral

Kaňkite

kaňkite
Crystal structure of Keatite Mineral

Keatite

keatite

Formula
SiO2
Keckite, Strunzite, Rockbridgeite Size: 3.4 cm × 2.4 cm × 1.8 cm Locality: Hagendorf South Pegmatite (Waidhaus), Bavaria, Germany Description: Hagendorf pegmatites are well known for phosphate species. Strunzite and rockbridgeite are more or less common, but keckite is very rare. In this specimen we can see some defined crystals of keckite, with tabular forms, transparence and orange color. Acompanied by strunzite white needles and black rockbridgeite-frondellite. In this specimen we have two species from the Type Locality: keckite and strunzite. Mineral

Keckite

keckite

Formula
CaMn(Fe³⁺,Mn)2Fe³⁺2(PO4)4(OH)3(H2O)7
Kegelite, Siderite Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: 2.7 x 2.7 x 2.2 cm. This is a fine thumbnail specimen of kegelite. The somewhat gemmy brown-red crystal in the middle is a remarkably sharp and lustrous siderite. It’s a nice accent to the rolling carpet of extremely rich, microcrystalline kegelite. Ex. Walter Kahn and Eric Asselborn Collections. Mineral

Kegelite

kegelite

Formula
Pb4Al2Si4O10(SO4)(CO3)2(OH)4
Mineral

Kegginite

kegginite

Formula
Pb3Ca3[AsV12O40(VO)]*20H2O
Mineral

Keilite

keilite

Formula
FeS
Mohs
4
Mineral

Keithconnite

keithconnite

Formula
Pd20Te7
Brown crystals of the very rare disprosium-erbium mineral yftisite-(Y) associated to white keiviite-(Y) from the famous locality of Ytterby (Ytterby, Resarö, Vaxholm, Stockholm County, Sweden) known for the discovery of four rare earth chemical elements(Y, Er, Tb, Yb). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Keiviite-(Y)

keiviite-(Y)

Formula
Y2Si2O7
White and pale tan crystal aggregates of keiviite-(Yb) Mineral

Keiviite-(Yb)

keiviite-(Yb)

Formula
Yb2Si2O7
Mineral

Keldyshite

keldyshite

Formula
(Na,H)2ZrSi2O7