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Mineralati

Minerals

6323 results

Yellow brown crystal aggregates of the rare mineral molysite from Larderello, Pomarance, Pisa Province, Tuscany, Italy. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Molysite

molysite

Formula
FeCl3
Outstanding green crystals of the very rare Mn-V mineral momoite from the famous Gambatesa mine (Valgraveglia Mine, Reppia, Ne, Graveglia Valley, Genova Province, Liguria, Italy). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Momoiite

momoiite

Formula
(Mn²⁺,Ca)3V³⁺2(SiO4)3
Mohs
6.5
Monazite-(Ce), Quartz Locality: Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia (Locality at mindat.org) Size: 3.5 x 2.6 x 1.3 cm. Monazite gets its name from the Greek word "monazein", which means "to be alone", in allusion to its isolated crystals and their rarity when first found. Monazite is usually found in granitic pegmatites, but these crystals are found in hydrothermal tin veins where is an absolute absence of Thorium (usually a trace element in Monazite). This is a remarkable, very well crystallized, ridiculously rare, specimen consisting of sharp, lustrous, translucent, orange-pink, twinned crystals on Monazite-(Ce) measuring up to 5 mm on Quartz crystals on matrix. The crystals actually perform a color change in different lighting ranging from orange-pink to a white/yellow depending upon the light source (more pink indoors). This piece is from the same mine at which this material was discovered along the Contacto and San Jose veins in this mine and was first described by Sam Gordon and Mark Bandy. Mineral

Monazite-(Ce)

monazite-(Ce)

Formula
CePO4
Agregát monazitu-(Gd) (Mnz-Gd) so xenotímom-(Y) (Xtm-Y), Gd bohatým xenotímom-(Y) a uranylovými arzenátmi-fosfátmi (U-As-P) v kremeň-muskovitovej žilovine, (Qz + Ms). Mineral

Monazite-(Gd)

monazite-(Gd)

Formula
Gd(PO4)
Orange crystal aggregates of the rare member of the monazite group, monazite-(La), from Lovozero, Russia (Pegmatite #47, Lepkhe-Nel'm Mountain, Seidozero Lake, Lovozero Massif, Murmansk Oblast, Russian Federation). Ex. Erich Laskowski collection (USA). Mineral

Monazite-(La)

monazite-(La)

Formula
LaPO4
Mineral

Monazite-(Nd)

monazite-(Nd)

Formula
NdPO4
Mineral

Monazite-(Sm)

monazite-(Sm)

Formula
SmPO4
Outstanding specimen of two very rare platinum and palladium minerals: kotulskite (Pd telluride) and moncheite (Pt telluride) in a polished section that was analyzed by Bart Cannon using microprobe. Kotulskite is in the center of the circle (in the photo) and metallic golden moncheite is the rest of the sample. From: Stillwater Complex, Stillwater County, Montana, United States of America. Mineral

Moncheite

moncheite

Formula
(Pt,Pd)(Te,Bi)2
Mohs
3.5
Mineral

Monchetundraite

monchetundraite
Yellow crystals of the rare calcium phosphate mineral monetite from the TL in Puerto Rico (Monito Island, Mayagüez, Puerto Rico, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Monetite

monetite

Formula
Ca(HPO4)
Pale lilac crystal aggregates of the very rare Niobium mineral mongolite from the type locality in Mongolia (Dorozhnyi Pegmatite, Khanbogd District, Ömnögovi Aimag, Mongolia) and only one of the 4 localities known worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Mongolite

mongolite

Formula
Ca4Nb6Si5O24(OH)10·6H2O
Orange brown crystals of the very rare Sb mineral monimoite from a locality in Sweden and only one of the very few known localities worldwide: Harstigen Mine, Pajsberg, Persberg, Filipstad, Värmland County. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Monimolite

monimolite

Formula
Pb2Sb⁵⁺2O7
Mineral

Monipite

monipite

Formula
MoNiP
Colorless crystals of the rare mineral monohydrocalcite on matrix. From: Iba, Richelsdorfer Gebirge, Hesse, Germany. Mineral

Monohydrocalcite

monohydrocalcite

Formula
CaCO3 * H2O
Yellow crystals of the very rare bismuth tellurate from an American locality: Hachite, Hidalgo Co., New Mexico, United States of America. Analyzed by Sid Williams. Mineral

Montanite

montanite

Formula
Bi³⁺2Te⁶⁺O6·nH2O (0 < n < 2/3)
Black metallic crystal aggregates of the very rare Au-Ag-Sb-Bi-Pb telluride montbrayite from the type locality in Montbray, Quebec, Canada, associated to quartz. Ex. F. Bauer collection (Munich). Ex. C. Rewitzer specimen. Mineral

Montbrayite

montbrayite

Formula
(Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Pb)38
Mineral

Montdorite

montdorite

Formula
(K,Na)2(Fe²⁺,Mn²⁺,Mg)5(Si4O10)2(OH,F)4
Montebrasite Locality: Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: 9.6 x 9.3 x 6.9 cm. This is a fist-sized cluster of thick, fat, intensely yellow montebrasite crystals with minor cleavelandite association. Clusters are very rare, and these chunky, deep-colored crystals really combine to make a fine overall specimen. The piece is not pristine, as it has some contacts around the edges and a few trivial dings on the display face as well. In person, this material from a modern find at this old locale has a rich color, almost an inside glow to it, that is hard to convey in photos. Weighs 577 grams. Mineral

Montebrasite

montebrasite

Formula
LiAlPO4(OH)
Mineral

Monteneroite

monteneroite
Reflected-light microscope picture illustrating the textural relations between the sulfides and oxides. Blue-filtered incandescent light. Abbreviations: mnv – monteneveite; mag – magnetite; ocr – oxycalcioroméite; ttr – tetrahedrite-(Fe); sp – sphalerite; ccp – chalcopyrite. Sample GEO-NRM catalogue no. HS3903. The image is published in an article distributed under the Creative Commons Attribution 4.0 License. Mineral

Monteneveite

monteneveite

Formula
Ca3Sb5+2(Fe³⁺2Fe²⁺)O12
Outstanding shiny black crystals of the extremely rare cadmium mineral monteponite from the famous Kudriavy volcano (Iturup Island, Sakhalinskaya Obl, Far Eastern Region, Russian Federation).Cadmium minerals are very rare in Nature, since only 27 from more than 5000 mineral species known are cadmium minerals. Specimen analyzed by SEM/EDS. Mineral

Monteponite

monteponite

Formula
CdO
Mohs
3
Monteregianite-(Y) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada (Locality at mindat.org) Field of view 6 mm. Specimen and photo Leon Hupperichs. Mineral

Monteregianite-(Y)

monteregianite-(Y)

Formula
KNa2YSi8O19·5H2O
Montesommaite is a very rare zeolite group mineral only known from 4 quarries in the Montesomma, Somma-Vesuvius complex (Campania, Italy). It occurs in this specimen as colorless gemmy crystals. Mineral

Montesommaite

montesommaite

Formula
K9(Si23Al9)O64·10H2O
Mineral

Montetrisaite

montetrisaite

Formula
Cu6(SO4)(OH)10·2H2O