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Minerals

6323 results

Mineral

Rauchite

rauchite

Formula
Ni(UO2)2(AsO4)2·10H2O
Mineral

Raudseppite

raudseppite

Formula
Ba2Ca7(Si3O9)2(CO3)2Cl2
:Agregados radiales de cristales de rauenthalita incoloros a blancos, transparentes y con brillo. La rauenthalita es un raro arsenato de calcio hidratado. De una localidad irlandesa poco conocida, a excepción de sus mosquitos. Fluorescente bajo UV onda larga Localidad: Muckross Mine, Killarney, Co. Kerry, Irlanda Medidas: 7 x 4 x 2.5 cm. Mineral

Rauenthalite

rauenthalite

Formula
Ca3(AsO4)2 * 10H2O
3.0 x 2.4 x 1.3 cm. Rauvite is a very rare hydrated calcium, uranyl vanadate occurring in the oxidized zones of U-V ores in Colorado Plateau-type deposits. It has questionable/doubtful status as a mineral species, according to the IMA. That being said, this very rich specimen is from near the Type Locality in Utah: Cactus Rat Mine, The Poison Strip, Thompsons Mining District, Grand Co., Utah, USA. The blackish, amorphous, waxy material is clustered in several places on the laminated shale matrix. Ex. John White Collection of Seattle. Mineral

Rauvite

rauvite

Formula
Ca(UO2)2(V10O28) * 16H2O
Ravatite (picture width: 45 mm) Locality: Halde Anna, Alsdorf, North Rhine-Westphalia, Germany Mineral

Ravatite

ravatite

Formula
C14H10
Mohs
1
Mineral

Raydemarkite

raydemarkite
Mineral

Raygrantite

raygrantite

Formula
Pb10Zn(SO4)6(SiO4)2(OH)2
Metallic silvery crystals of the extremely rare thallium mineral rayite from the type locality in India (Dariba Mine, Udaipur District, Udaipur Division, Rajasthan, India). Mineral

Rayite

rayite

Formula
(Ag,Tl)2Pb8Sb8S21
realgar, galena, pyrite, sphalerite, quartz, orpiment : Palomo Mine, Castrovirreyna Province, Huancavelica Department, Perù Mineral

Realgar

realgar

Formula
AsS
Mineral

Reaphookhillite

reaphookhillite

Formula
MgZn2(PO4)2·4H2O
Black crystals of the extremely rare thallium mineral rebulite in a matrix of orpiment and realgar from a new find in Shimen, China (Jiepaiyu, Shimen County, Hunan Province), a locality that was only previously known for orpiment and realgar crystals. Rebulite has only ben found in two localities worldwide. Specimen analyzed by SEM. Mineral

Rebulite

rebulite

Formula
Tl5Sb5As8S22
Mineral

Reckibachite

reckibachite

Formula
Ag2Pb12As14Sb4S40
Quartz, Rectorite Locality: Jeffrey Quarry, Jeffrey, Pulaski County, Arkansas, USA (Locality at mindat.org) Size: miniature, 4.5 x 4.2 x 4 cm Rectorite w/Quartz Interesting specimen of "mountain leather", a decrepitated claylike mineral that has the feel and sturdiness of cardboard. Mineral

Rectorite

rectorite

Formula
(Na,Ca)Al4((Si,Al)8O20)(OH)4 * 2H2O
Very nice orange yellow crystals of the extremely rare mineral redcanyonite (IMA 2016-082) from the type and only known locality worldwide (Blue Lizard Mine, Red Canyon, San Juan County, Utah, United States of America). Analyzed specimen by SEM/EDS. Mineral

Redcanyonite

redcanyonite

Formula
(NH4)2Mn[(UO2)4O4(SO4)2](H2O)4
Hureaulite, Reddingite Locality: Cigana claim (Jocão claim), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: 5.9 x 4.9 x 3.9 cm. This pegmatite is known for its suite of high-quality phosphate species, more than for gem crystals. It is very similar, in fact, to the famous Tip Top Mine in South Dakota for the major phosphate species found. However, hureaulite from this locality has a more beautiful, intense rich color and lustre, and is arranged in such pretty aggregates against contrasting lustrous brown reddingite, that I consider these to be among the more beautiful examples of the species. Usually you find the hureaulite dispersed as a flat carpet of small 2-5mm crystals on matrix shards. Few specimens have relief and well-defined aesthetics: but this piece has a sharp, superb cluster approximately 3 cm tall perched atop the specimen. It is 3-dimensional and leaps out. Mineral

Reddingite

reddingite

Formula
Mn²⁺3(PO4)2·3H2O
Redgillite - Germany, North-Rhine Westphalia, Arnsberg, Burbach, Schöne Aussicht Mine - 3 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

Redgillite

redgillite

Formula
Cu6(SO4)(OH)10·H2O
White crystal aggregates of the very rare mineral redingtonite associated to orange botryogen crystals from the type locality in Redington mine (Redington Mine, Knoxville, Napa County, California, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Redingtonite

redingtonite

Formula
(Fe²⁺,Mg,Ni)(Cr,Al)2(SO4)4*22H2O
Dark green crystals of the rare mineral redledgeite from one of the only three known localities worldwide: Saranovskii Mine, Gorozavodskii, Urals Region, Russian Federation. Mineral

Redledgeite

redledgeite

Formula
Ba(Ti⁴⁺6Cr³⁺2)O16
Mineral

Redmondite

redmondite
8.6 x 7.3 x 4.3 cm. Redondite is the rare iron-rich variety of variscite. Sculptural green crusts are artistically set on the hefty matrix richly inpregnated with banded micro pyrite crystals. Old-time, seldom available material. A fine and rare Bisbee combination species for the locality collector. From a major rarities collection. From: Cole Mine (Cole shaft; Cole No. 3), Bisbee, Cochise County, Arizona, USA. Mineral

Redondite

redondite

Formula
Al(PO4)·2H2O
Mineral

Reederite-(Y)

reederite-(Y)

Formula
(Na,Mn)15Y2(CO3)9(FSO3)Cl
Piece of the mineral reedmergnerite. Discovered in Dara-i-Pioz, Tajikistan. Exhibit of the "Earth and Man" Museum in Sofia, Bulgaria. Mineral

Reedmergnerite

reedmergnerite

Formula
NaBSi3O8
Mohs
6.3
Yellow green crystal plates of the rare Ni mineral reevesite from Clear Creek (Clear Creek, Picacho Peak, New Idria, San Benito County, California, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Reevesite

reevesite

Formula
Ni6Fe³⁺2(OH)16(CO3) * 4H2O
Mohs
2
Mineral

Refikite

refikite

Formula
C20H32O2