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Minerals

6323 results

Wiluite Locality: Wilui River, Yakutxk, Siberia, Russia Size: small cabinet, 6.9 x 4.0 x 2.7 cm Wiluite If the name of this species is unfamiliar to you, it is a rare member of the vesuvianite family of minerals. This matrix specimen displays a clearly tetragonal habit. It is a doubly terminated, lustrous, black wiluite crystal, measuring 2.5 cm in length. Sharp. Ex. Richard Hauck Collection. Mineral

Wiluite

wiluite

Formula
Ca19(Al,Mg)13(B,☐,Al)5(Si2O7)4(SiO4)10(O,OH)10
sodalite var. hackmanite, winchite : Koksha Valley (Kokscha Valley ; Kokcha Valley), Khash & Kuran Wa Munjan Districts, Badakhshan Province (Badakshan Province ; Badahsan Province), Afghanistan Mineral

Winchite

winchite

Formula
☐(NaCa)(Mg4Al)Si8O22(OH)2
Mineral

Windhoekite

windhoekite

Formula
Ca2Fe³⁺3-ₓ[Si8O20](OH)4·10H2O
These sprays have been identified as being intermediate windmountainite/tuperssuatsiaite. They are associated with aegirine, analcime and some orange/red balls of a smectite group mineral. They were collected on 3/14/2016. Mineral

Windmountainite

windmountainite

Formula
☐Fe³⁺2Mg2☐2Si8O20(OH)2∙8H2O
One outstanding greenish yellow sharp crystal of the extremely rare titanium-tellurium mineral winstanleyite from the type locality (Tombstone District, Cochise County, Arizona, United States of America) and only one of the three known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Winstanleyite

winstanleyite

Formula
TiTe4+3O8
Figure 1. Crystal of wiperamingaite, 0.25 mm across, associated with fluorite (white), leucophosphite (pink) and phosphosiderite (blue) (specimen in private collection). Mineral

Wiperamingaite

wiperamingaite

Formula
NaCaFe³⁺Al(PO4)F5(OH)·H2O
Wiserite Dimensions: 8.3 cm x 2.3 cm x 0.8 cm Locality: Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland Wiserite is a very rare compound borate found in manganese ore deposits. This less well-known ancient Swiss Fe-Mn mine, abandoned in 1966, is the Type Locality. Specimens are rare. This is extremely rich solid small cabinet lathe of silky lustre, brownish-gray fibrous masses of the rarity. Ex Matioli Collection. Mineral

Wiserite

wiserite

Formula
Mn²⁺14(B2O5)4(OH)8·(Si,Mg)(O,OH)4Cl
Witherite Locality: Minerva Mine, Hardin County, Illinois Size: thumbnail, 2.5 x 2 x 1 cm Witherite Killer cluster of a witherite xl perched on a doubly-terminated xl below it. Only point of contact is on the backside Mineral

Witherite

witherite

Formula
BaCO3
Wittichenite Locality: Cattlegrid pit (Cattlegrid mine), Mount Gunson, Stuart Shelf area, Andamooka Ranges - Lake Torrens area, South Australia, Australia Original description: A wittichenite crystal about 35mm long, in the Smithsonian Museum. Mineral

Wittichenite

wittichenite

Formula
Cu3BiS3
Platy metallic crystals of the very rare sulphosal mineral wittite from the famous locality LaFossa Crater (La Fossa Crater, Vulcano Island, Aeolian Islands, Sicily, Italy) and associated to acicular metallic bismuthinite. Analyzed specimen. Mineral

Wittite

wittite

Formula
Pb9Bi12(S,Se)27
White Witzkeite, original material (Specimen size 17 mm) Fundort: South slope Punta de Lobos, Tarapacá Region, Chile (21°01'26.38 S, 70°10'16.20 W) Mineral

Witzkeite

witzkeite

Formula
Na4K4Ca(NO3)2(SO4)4·2H2O
Fig. 6. (a) Bright-field and (b) high-angle annular dark-field scanning-transmission electron microscope (HAADF-STEM) images of foil #6034 showing a portion of a lamellar intergrowth of osbornite–khamrabaevite, Ti(C,N), jingsuiite, TiB2, and wenjiite, Ti10(Si,P,□)7. Al2O3 – corundum hosting the lamellar intergrowth. Wodegongjieite forms pools between corundum and wenjiite, Ti10(Si,P,□)7. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). Mineral

Wodegongjieite

wodegongjieite
Wodginite Locality: Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: small cabinet, 9.4 x 3.6 x 2.6 cm Wodginite (HUGE crystal!) Wodginite is one of the more bizarre and unusual tantalates, and is very rare in large crystals (to my knowledge, known from just a couple of inds in Brazil in high quality). At first glance, this one is so large, lustrous, and sharp, that it could easily be mistaken for a ferberite til you feel the high heft in your hand and wonder. This crystal is complete all around except for a small contact in the lower-left, and displays nicely 360 degrees around as well. It is, I think, one of the more significant Brazilian minerals in terms of species representation, and thus a bargain compared to what you get for the price in "common, pretty" tourmalines from Brazil. To me, rarities of this calibre, when also in good condition and relatively aesthetic, make for the most interesting acquisitions! Comes with custom base. Mineral

Wodginite

wodginite

Formula
Mn²⁺Sn⁴⁺Ta2O8
Wolfeite Locality: Big Fish River, Dawson Mining District, Yukon Territory, Canada (Locality at mindat.org) This is a very rich specimen of this rare phosphate, wolfeite, only seldom seen even at these rich phosphate localities in the remote Yukon (and near nonexistent from other places). It is a very rich, relatively showy example of this species. The phosphate deposits of the Yukon are one of the world's great sources of a suite of rare phosphate species, and the Ordway collection was known for them over the years. This particular piece shows extremely good crystals, in intergrown clusters in matrix It can easily be trimmed into several specimens of equal value . Self-collected by Al Ordway in the 1970s. 6.1 x 3.2 x 2.3 cm Mineral

Wolfeite

wolfeite

Formula
(Fe²⁺,Mn²⁺)2(PO4)(OH)
Mineral

Wolfgangpauliite

wolfgangpauliite

Formula
Ca1.5K(H2O)5.5[(UO2)3O2(PO4)2]
Mineral

Wolfsriedite

wolfsriedite

Formula
Pb[(UO2)2(W⁶⁺Fe³⁺)O7(OH)](H2O)3
Wollastonite Locality : Tranomaro-Maromby area, Amboasary District, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagascar Size : 22x 12 x8cm Mineral

Wollastonite

wollastonite

Formula
CaSiO3
Single crystal aggregate of the rare mineral wonesite from Vermont (Post Pond Volcanics, Norwich, Windsor County, Vermont, United States of America). Ex. Erich Laskowski collection (USA). Mineral

Wonesite

wonesite

Formula
(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4
Mineral

Woodallite

woodallite

Formula
Mg6Cr2(OH)16Cl2·4H2O
Woodhouseite Locality: Champion Mine (White Mountain Mine), White Mountain, Laws, White Mts, Mono County, California, USA (Locality at mindat.org) Field of view 5 mm. Specimen and photo Leon Hupperichs. Mineral

Woodhouseite

woodhouseite

Formula
CaAl3(SO4)(PO4)(OH)6
Woodruffite Field of view: 2 mm Locality: Mina Ojuela, Mapimí, Mapimí Municipality, Durango, Mexico Mineral

Woodruffite

woodruffite

Formula
Zn²⁺x/2(Mn4+1-xMn³⁺x)O2*yH2O
Woodwardite Locality: Cornwall, England, UK (Locality at mindat.org) Size: 2.9 x 1.8 x 0.7 cm. Woodwardite is a rare hydrated copper sulfate and this fine, old-time piece is from the Type Locality - Cornwall, England. This wavy piece has turquoise-blue edges above bluish-green above sky-blue woodwardite. A striking toenail from a classic locale. Rare. Mineral

Woodwardite

woodwardite

Formula
(Cu1-ₓAlₓ)(SO4)ₓ/2(OH)2 · nH2O (x < 0.5, n < 3x/2)
Mineral

Wooldridgeite

wooldridgeite

Formula
Na2CaCu²⁺2(P2O7)2 * 10H2O
Mineral

Wopmayite

wopmayite

Formula
Ca6Na3☐Mn(PO4)3(PO3OH)4