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Mineralati

Minerals

6323 results

Mineral

Ramazzoite

ramazzoite

Formula
[Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36]
Rambergite Field of view 3 mm Locality: Garpenberg Norra Mine, Garpenberg, Hedemora, Dalarna County, Sweden Mineral

Rambergite

rambergite

Formula
MnS
Mohs
4
Ramdohrite Locality: Chocaya-Animas (Animas-Chocaya), Atocha-Quechisla District, Sud Chichas Province, Potosí Department, Bolivia Dimensions: 1.5 cm x 1.0 cm x 1.0 cm Excellent and very rare. Essentially a monominerallic specimen comprised of bright, metallic-gray, well-formed, striated crystals and subhedral aggregates of ramdohrite to 3mm. Named after the famous ore microscopist Paul Ramdohr. Ex. Rock Currier collection. Tom and Melissa Campbell photos. Mineral

Ramdohrite

ramdohrite

Formula
Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Mohs
2
Mineral

Rameauite

rameauite

Formula
K2Ca(H[3]2O)(H[5]2O)4[(UO2)6O6(OH)4](H[4]2O)
Xls to 1/6 mm on edge. Via Arnaldo Brunetti (ex Gilles Haineualt). MOB coll. A pair of small, but sharp xls, showing the typical “peatite on the outside, ramikite on the inside” zoning. The background is very dark (altered) rhodochrosite/siderite in curved xls. The other major mineral present is analcime, but there is none in the photo. These xls are close to the resolution limit of my scope. From: Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. Mineral

Ramikite-(Y)

ramikite-(Y)

Formula
Li4(Na,Ca)12(Y,Ca,REE)6Zr6(PO4)12(CO3)4O4[(OH),F]4
Rammelsbergite Locality: Ste Marie-aux-Mines (Markirch), Haut-Rhin, Alsace, France (Locality at mindat.org) Size: 5.5 x 4.9 x 3.4 cm. An extremely rare old French rammelsbergite, from this classic mining district. The specimen is very rich with microcrystals, and a few larger aggregates to 5mm. Ex. Martin Zinn, Eric Asselborn, and F. John Barlow Collections. Mineral

Rammelsbergite

rammelsbergite

Formula
NiAs2
Mineral

Ramosite

ramosite
Ramsbeckite (Field of view 1.4 mm) Locality: Pontinha nº3 Mine, Souto Maior, Sabrosa, Vila Real District, Portugal Group of green ramsbeckite crystals on chalcopyrite. Collected 2014. XRD and EDS analyzed. This photo was originally published in: Alves, P. (2017) The Mining District of Vale das Gatas, Sabrosa, Portugal. Mineral Up Vol. IV, nº5, 8-53. Mineral

Ramsbeckite

ramsbeckite

Formula
(Cu,Zn)15(SO4)4(OH)22·6H2O
Mohs
3.5
Ramsdellite Locality: Mistake Mine (Box Canyon deposits), Sam Powell Peak, Box Canyon District, Yavapai County, Arizona, USA (Locality at mindat.org) Size: 7.9 x 4.8 x 2.0 cm. In a pleasing sculptural vug is a plate of equant, splendent, black ramsdellite crystals, to .6 cm across. This is a superb example of the species, and a beautiful, 3-dimensional piece in person. Mineral

Ramsdellite

ramsdellite

Formula
Mn⁴⁺O2
Mohs
3
Ranciéite Locality: Mont Lozère, Languedoc-Roussillon, France (Locality on mindat.org) Original description: A 4.3 by 4.3 cms mass with light brown Rancieite. JSS specimen snd photo. Mineral

Ranciéite

ranciéite

Formula
(Ca,Mn²⁺)0.2(Mn⁴⁺,Mn³⁺)O2·0.6H2O
Rankachite Locality: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany (Locality at mindat.org) Brown acicular xls of Rankachite, field of view 2 mm. Specimen and photo Leon Hupperichs. Mineral

Rankachite

rankachite

Formula
Ca0.5(V4+,V5+)(W6+,Fe³⁺)2O8(OH) * 2H2O
Yellowish white crystal aggregates of the rare Tantalum mineral rankamachite from the TL in Congo (Mumba Cassiterite Gravels, Mumba, Masisi Mountains, North Kivu, DR Congo). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Rankamaite

rankamaite

Formula
(Na,K)3(Ta,Nb,Al)11(O,OH)31
Areas with ellinaite in gehlenite-rankinite paralava (a–b), Hatrurim Basin, Israel. BSE and reflected light images. Symbols: Eln-1, Eln-2 – ellinaite; Po – Cr-rich pyrrhotite; Gh – gehlenite; Ran – rankinite; La – larnite–flamite; Prv – Si-rich perovskite; Alt – alteration products after pyrrhotite. 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

Rankinite

rankinite

Formula
Ca3Si2O7
Blue-green crystals of the very rare mineral ransomite associated to yellow magnesiocopiapite crystals from the type locality for ransomite and only one of three known localities worldwide (United Verde Extension Mine, Jerome, Yavapai County, Arizona, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Ransomite

ransomite

Formula
CuFe2(SO4)4 * 6H2O
Deep yellow microcrystals of the extremely rare Al-U mineral ranunculite from the TL and only confirmed locality worldwide (Kobokobo Pegmatite, Mwenga, South Kivu, DR Congo). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Ranunculite

ranunculite

Formula
HAl(UO2)(PO4)(OH)3·4H2O
Rapidcreekite from Rapid Creek, Yukon. Held in the A. E. Seaman Mineral Museum. Mineral

Rapidcreekite

rapidcreekite

Formula
Ca2(SO4)(CO3)·4H2O
Rappoldite Locality: Rappold Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany Field of view 5 mm Aggregate of reddish brown rappoldite crystals on quartz Mineral

Rappoldite

rappoldite

Formula
PbCo2(AsO4)2·2H2O
Mohs
4.5
Red glassy raslakite is nepheline-syenite. Rare eudyalite group mineral, occurs only at 2 places worldwide, this one from the type locality: Karnasurt Mountain, Lovozero Massif, Northern Region, Russian Federation. Mineral

Raslakite

raslakite

Formula
Na15Ca3Fe²⁺3(Na,Zr)3Zr3(Si,Nb)[(Si3O9)2(Si9O27)2SiO](OH,H2O)3(Cl,OH)
Mineral

Rasmussenite

rasmussenite

Formula
Ca(C2H3O3)2·3H2O
Raspite Locality: Broken Hill Proprietary Mine (Proprietary Mine; BHP Mine), Broken Hill, Yancowinna County, New South Wales, Australia (Locality at mindat.org) Picture width 3 mm. Collection and photograph Christian Rewitzer Mineral

Raspite

raspite

Formula
PbWO4
Tiny dark pink grains of rastsvetaevite in matrix. Field of view 3 mm. Specimen and photo Leon Hupperichs. From: Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia. Mineral

Rastsvetaevite

rastsvetaevite

Formula
Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2
Rasvumite Locality: Rasvuuchorr Mountain, Khibiuy Massif, Kolo, Russia Size: miniature, 3.6 x 3.1 x 2.6 cm Rasvumite (HUGE XL) This specimen features a sharp freestanding rasvumite [possibly djerfisherite, see http://www.mindat.org/mesg-7-75510.html] on matrix. I am told that , at 6-7mm, this freestanding rasvumite crystal is quite exceptional. 3.6 x 3.1 x 2.6 cm Mineral

Rasvumite

rasvumite

Formula
KFe2S3
Rathite Locality: Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland (Locality at mindat.org) Size: miniature, 3.9 x 3.3 x 1.8 cm Rathite (huge XL from type locale) This specimen hosts a HUGE crystal for the species, measuring 2.8 cm - over an inch long! It is up to 8mm width. The crystal face is complete and undamaged, and the crystal shows off its end-terminations at top and bottom. A major crystal for the species, of some importance, and well above anything you typically see from the locale. This is an older piece that has been in a private German collection for some time. I have not seen a larger example for sale. To be sure about it, i had this tested every which way by Bart Cannon's lab in Seattle, to prove to his satisfaction that it is rathite , and not the slightly more common lengenbachite or baumhauerite. Mineral

Rathite

rathite

Formula
Ag2Pb12-ₓTlₓ/2As18+ₓ/2S40
Mohs
3
Mineral

Rathite-Iv

rathite-IV

Formula
Pb3As5S10