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Mineralati

Minerals

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Two very small single black crystals of the extremely rare Ag-Pb-Sb sulphosalt mineral roshchinite from the TL in Kazakhstan (Kvartsitovje Gorki, Aksu, Stepnogorsk, Akmola Region, Kazakhstan). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Roshchinite

roshchinite

Formula
(Ag,Cu)19Pb10Sb51S96
Green crystals of rosiaite, a very rare Pb-Sb oxide only known from a few localities worldwide. From: Tafone Mine, Grosseto Province, Tuscany, Italy. Mineral

Rosiaite

rosiaite

Formula
PbSb2O6
Sharp yellow crystals of rosickyite on matrix from an unspecified off shore drill hole in the Pacific Ocean near California (Ventura County, California, United States of America). Rosickyite is a dimorphous with both, sulphur (α-sulphur) and β-sulphur. Mineral

Rosickýite

rosickýite

Formula
S
3.0 x 2.0 x 1.0 cm. A rare, complex lead phosphate hydrate that is not well characterized. From a peculiar locality (Huelgoat, Finistère, Brittany, France). Nice thumbnail specimen consisting of small, yellow-brown to grayish, grape-like botryoids. Shows concentric layering on the backside with a radial structure nucleating on sphalerite. This piece may provide good material for further characterization. Eric Asselborn label. Ex. Rock Currier collection. Mineral

Rosièresite

rosièresite

Formula
[Pb,Cu,Al,PO4,H2O] (?)
Mineral

Rossiantonite

rossiantonite

Formula
Al3(PO4)(SO4)2(OH)2(H2O)10·4H2O
Rossite. Field of view 7 mm. From: Arrowhead tunnel, Bull Pen Canyon, San Miguel Co., Colorado, USA. Mineral

Rossite

rossite

Formula
Ca(VO3)2·4H2O
Light pink sprays of rossmanite. Ex Jaroslav Hyrsl specimen. From: Dobrá Voda, Křižanov, Žďár nad Sázavou District, Vysočina Region, Czech Republic. Mineral

Rossmanite

rossmanite

Formula
☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Mohs
7
Mineral

Rossovskyite

rossovskyite

Formula
(Fe³⁺,Ta)(Nb,Ti)O4
Rostite (Size 5 x 3.5 x 3 cm) Locality: Anna Mine I, Alsdorf, North Rhine-Westphalia, Germany Mineral

Rostite

rostite

Formula
AlSO4(OH)·5H2O
Fig. 1. (b) crystals of rotemite (purple) on altered ettringite (white). Mineral

Rotemite

rotemite

Formula
Ca4Cr2(OH)12Cl2·4H2O
Reflected-light photomicrograph of roterbärite (Rtb) inclusions in clausthalite (Cth), in spatial association with gold (Au), bohdanowiczite (Boh), and mertieite-II (Mt-II), in a matrix of vein carbonate (Cb). Roter Bär mine, Harz Mountains, Germany. Copyright © Technical University Clausthal - This image is copyrighted. Unauthorized reproduction prohibited. Mineral

Roterbärite

roterbärite

Formula
PdCuBiSe3
Brownish-red rotherkopfite crystals with spray of sanidine crystals on quartz on holotype specimen 76283; the field of view is 0.5 mm across. 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

Rotherkopfite

rotherkopfite

Formula
KNa2Fe²⁺(Fe²⁺)2(Ti1.5Fe²⁺0.5)[Si4O12]2
Outstanding blue rouaite crystals from a very limited new find in Tenke-Fungureme mine, Likasi (Tenke, Tenke-Fungurume, Kolwezi, Katanga, Democratic Republic of the Congo). The crystals grow on a matrix of cuprite. Rouaite is an extremely copper nitrate rare mineral only found in a few localities worldwide. EDS and XRD analyzed. Mineral

Rouaite

rouaite

Formula
Cu2(NO3)(OH)3
Green roubaultite and yellow kamotoite. From: Kamoto East Open Cut, Kamoto, Kolwezi, Lualaba, DR Congo. Mineral

Roubaultite

roubaultite

Formula
Cu2(UO2)3(CO3)2O2(OH)2*4H2O
Mineral

Roumaite

roumaite

Formula
(Nb,Ti)(Ca,Na,☐)3(Ca,REE)4(Si2O7)2(OH)F3
Mineral

Rouseite

rouseite

Formula
Pb2Mn²⁺[AsO3]2 * 2H2O
An extremely rare thallium mineral in crystallized form, as shiny dark red crystals (middle-upper part of the photo). From: Monte Arsiccio Mine, Apuan Alps, Tuscany, Italy. Mineral

Routhierite

routhierite

Formula
CuTlHg2As2S6
Abundant pale tan vitreous waxy crystals of the extremely rare Na-Ca-Mn mineral rouvilleite from the type locality in Mont Saint-Hilaire, in the former Rouville County, Québec, Canada. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Rouvilleite

rouvilleite

Formula
Na3Ca2(CO3)3F
Elongated crystals of rouxelite, bluish, metallic luster and with thick section. It is accompanied by small and thin acicular crystals of robinsonite, red copper color, in the midst of larger crystals of rouxelite. Finding of late 2014. Analyzed by Stefano Magnanelli and Christian Biagioni. Not many specimens were collected. Collected: 2014 Locality: Monte Arsiccio Mine, Apuan Alps, Tuscany, Italy Size: 6.2 × 4.4 × 2.7 cm Mineral

Rouxelite

rouxelite

Formula
Cu2HgPb23Sb27S65.5
:Agregados en abanico de cristales de roweita, de color beige anaranjado, definidos, de buen tamaño y de calidad para la especie. La roweita es un borato de calcio y manganeso. Se acompañan de cristales prismáticos hexagonales de color blanco de johnbaumita de hasta 7 mm, excelentes también para la especie y muy poco habituales. La johnbaumita es un raro arseniato de calcio, el análogo arsenical del hidroxilapatito. En una matriz con verde andradita y cristales incoloros transparentes de pentahidroborita. Un ejemplar muy completo, con especies muy raras y bien cristalizadas. Medidas: 5.5 x 4.5 x 3.7 cm. Cristal principal: 1.5 cm (Roweite)/ 7 mm (Johnbaumite) Encontrado en 2017. Localidad: Shijiangshan mine, Linxi, Linxi Co., Ulanhad League, Inner Mongolia, China Mineral

Roweite

roweite

Formula
Ca2Mn²⁺2B4O7(OH)6
Mineral

Rowlandite-(Y)

rowlandite-(Y)

Formula
(Y,Ce)4Fe²⁺(Si2O7)2F2 (?)
Mineral

Rowleyite

rowleyite

Formula
[Na(NH4,K)9Cl4][V5+,4+2(P,As)O8]6*n[H2O,Na,NH4,K,Cl]
Metallic crystal aggregates of the rare copper sulphide roxbyite from the type locality in Roxby (Olympic Dam Mine, Roxby Downs, South Australia, Australia). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Roxbyite

roxbyite

Formula
Cu9S5
Mineral

Roymillerite

roymillerite

Formula
Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5
Colour
RAL 3015