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Mineralati

Minerals

6323 results

White crystal aggregates of the very rare calcium silicate mineral rustumite from a locality in Mexico (Negra Mine, Maconi, Cadereyta Municipality, Queretaro, Mexico). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Rustumite

rustumite

Formula
Ca10(Si2O7)2(SiO4)(OH)2Cl2
Mineral

Ruthenarsenite

ruthenarsenite

Formula
(Ru,Ni)As
Metallic silvery nugget of the very rare Ir-Os-Ru mineral rutheniridosmine in a completely analyzed specimen by SEM/EDS. From Zlatoust District, Chelyabinsk Oblast, Russian Federation. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Rutheniridosmine

rutheniridosmine

Formula
(Ir,Os,Ru)
:Locality: Nizhnii Tagil, Sverdlovskaya Oblast, Urals Region, Russian Federation Size: 0.24 × 0.2 × 0.1 cm Description: This is a small grain of native ruthenium with composition (Ru0.51,Os0.25,Ir0.24) from PGM concentrates of Neiva river sands. Analysis has been carried out with JEOL FE-SEM. Harris & Cabri (1973) indicated in the diagram attached that this composition must be related to rutheniridosmine, but according to 50% rule accepted by IMA, it is Ruthenium now. Mineral

Ruthenium (Native)

ruthenium (native)

Formula
Ru
Rutherfordine (Field of view 7 mm) Locality: Musonoi Mine, Kolwezi, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) Mineral

Rutherfordine

rutherfordine

Formula
(UO2)CO3
Rutilo. Macla múltiple rodada. Cerro de la Mata de la Cabeza. Horcajuelo de la Sierra (Madrid) España. Localidad tipo. 3,5 cmFoto J. Callén. Col. M. Calvo Mineral

Rutile

rutile

Formula
TiO2
Mineral

Ryabchikovite

ryabchikovite
Black crystal aggregates of the very rare Nb-Ta oxide mineral rynersonite in an analyzed specimen from Sweden in a contrasting whitis matrix. From Kårarvet, Falun, Dalarna County, Sweden. Ex. Erich Laskowski collection. Mineral

Rynersonite

rynersonite

Formula
CaTa2O6
Rémondite-(Ce) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada FOV 4.4 x 4.1 mm. MOB coll. One of the characteristic habits for remondite-(ce) at MSH. Very strong REE absorbtion lines. Mineral

Rémondite-(Ce)

rémondite-(Ce)

Formula
Na3(Ce,Ca,Na)3(CO3)5
Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada Dimensions: 2.5 cm x 1.7 cm x 1.2 cm 2.5 x 1.7 x 1.2 cm. This is a surprisingly fine and large crystal of remondite from the famous alkaline massif of Mont Saint-Hilaire, Quebec, Canada. Mont Saint-Hilaire is well known for its abundant suite of rare minerals, and some (like this) are very seldom found there. Usually occurring as a micromineral, this remondite thumbnail is one of the few really impressive crystals I have seen, personally, and I think it has a fairly high level of significance. This hexagonal crystal is translucent to gemmy near the termination, where you can see how bright and colorful and superb it is for the species. Formerly in the noted Gilles Haineault Collection, it was last acquired in the mid 1990s by the previous owner. Ex. Hoppel Collection. Mineral

Rémondite-(La)

rémondite-(La)

Formula
Na3(La,Ca,Na)3(CO3)5
Mineral

Ríosecoite

ríosecoite
Römerite Locality: Island Mountain Mine, Island Mountain, Trinity County, California, USA (Locality at mindat.org) Dozens of deep red, attractive crystals to 2 mm of the rare iron sulfate Römerite make this an attractive and rich specimen for the species. It is the best of 3 pieces obtained from a single large piece which I broke open to explore a vein of crystals that seemed to run inside (and this one gets the original label). Interestingly, this locality has NOT been reported for the species according to the MINDAT database, though its possible that the county borders have shifted since 1925 and this now overlaps one of the mines noted (?). In any case, this collector named Vonsen seems to have provided a number of Californian specimens to Gage. Note the somewhat premium price on the Gage label (not shown but included) of $10 in 1925 - a fortune in the day for an ugly little rock! He must have regarded this as an exceptional acquisition at the time (and compared to what I have seen of the German stuff, it IS exceptional for the species). 5 x 5 x 4 cm Mineral

Römerite

römerite
Outstanding orange crystal group of the very rare rare-earth mineral röntgenite-(Ce) in an completely analyzed specimen by SEM/EDS, from the TL in Greenland (Narssârssuk Pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Röntgenite-(Ce)

röntgenite-(Ce)

Formula
Ca2Ce3(CO3)5F3
Group of colourless rösslerite crystals on white brassite from the famous locality of Jachymov (Bohemia, Czech Republic). Mineral

Rösslerite

rösslerite
:Yellow to orange platy crystals of rüdlingerite (0.1 mm long) with dark orange to red fianelite crystals from Valletta. The image belongs to the article "Rüdlingerite, Mn2+2V5+As5+O7·2H2O, a New Species Isostructural with Fianelite" (https://www.mdpi.com/2075-163X/10/11/960/htm) published with a CC license. Mineral

Rüdlingerite

rüdlingerite
Mineral

Saamite

saamite

Formula
Ba☐TiNbNa3Ti(Si2O7)2O2(OH)2(H2O)2
Mohs
3
Blue-grey crystal aggregates of sabatierite associated to grey berzelianite crystals. Sabatierite is a very rare thallium selenide mineral (Cu6TlSe4) found only in 5 localities worldwide, this specimen being from the type locality: Bukov Mine, Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Sabatierite

sabatierite

Formula
Cu6TlSe4
Mineral

Sabelliite

sabelliite

Formula
(Cu,Zn)2Zn(AsO4,SbO4)(OH)3
Outstanding colorless single crystal aggregate of the extremely rare NH4-Fe-sulphate minerals lonecreekite, sabieite and clairite from the type locality for all of them in Lone Creek Falls, Sabie, Southafrica. Ex Vandenbroucke Museum collection from Waregem, Belgium. Analyzed specimen by the former owner of the specimen. Mineral

Sabieite

sabieite

Formula
(NH4)Fe³⁺(SO4)2
Sabinaite, Analcime, Siderite Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada (Locality at mindat.org) Size: 2.9 x 2.7 x 2.7 cm. Sabinaite is rare sodium, zirconium, titanium carbonate found in only two localities worldwide, both in Canada. Tan sabinaite crystals are nicely scattered as clusters and isolated crystals on the combination matrix of siderite and porcelaneous analcime crystals. Mineral

Sabinaite

sabinaite

Formula
Na4Zr2TiO4(CO3)4
Sabugalite Locality: Margnac Mine, Compreignac, Haute-Vienne, Limousin, France (Locality at mindat.org) An extremely rare uranium phosphate, with crystals completely covering 4 of 6 sides and forming a solid specimen. This is very rich and colorful. 4.5 x 2.5 x 2 cm Mineral

Sabugalite

sabugalite

Formula
HAl(UO2)4(PO4)4·16H2O
Mohs
2.5
Mineral

Saccoite

saccoite
Mineral

Sachanbińskiite

sachanbińskiite

Formula
NaMn4(Al5Be)(AlSi5O18)2·2H2O
Mineral

Sacrofanite

sacrofanite

Formula
(Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6*2H2O