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Barnesite Locality: Cactus Rat Mine, Cisco, Yellow Cat District (W. part of Thompsons District), Grand County, Utah, USA Original description: A 2.9 by 2.4 cms mass with reddish brown Barnessite. JSS specimen and photo. Mineral

Barnesite

barnesite

Formula
(Na,Ca)V6O16 * 3H2O
Mohs
3
Mineral

Barquillite

barquillite

Formula
Cu2CdGeS4
Barrerite Locality: Rocky Pass, Kuiu Island, Sitka Borough, Alaska, USA (Locality at mindat.org) Barrerite is a rare zeolite species related to stilbite, but found in just a few localities and not nearly as common. This specimen is from a find of the late 90's which really set a new standard for the species. It is, also, an aesthetically attractive specimen in its own right. 4.4 x 3.4 x 3.1 cm Mineral

Barrerite

barrerite

Formula
Na2(Si7Al2)O18·6H2O
Barringerite (Weight: 34.4 g) – Locality: Hatrurim formation, Israel Mineral

Barringerite

barringerite

Formula
(Fe,Ni)2P
Mineral

Barroisite

barroisite

Formula
☐NaCa[Mg3Al2](Si7Al)O22(OH)2
Mohs
5.5
Mineral

Barronite

barronite
Mineral

Barrotite

barrotite

Formula
Cu9Al(HSiO4)2[(SO4)(HAsO4)0.5](OH)12·8H2O
Mineral

Barrydawsonite-(Y)

barrydawsonite-(Y)

Formula
Na1.5Y0.5CaSi3O9H
Barstowite Locality: Passa Limani Cove slag locality, Passa Limani area, Lavrion District slag localities, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece Picture width 4 mm. Collection and photograph Christian Rewitzer Mineral

Barstowite

barstowite

Formula
Pb4Cl6(CO3)·H2O
Mohs
3
Mineral

Bartelkeite

bartelkeite

Formula
PbFeGe(Ge2O7)(OH)2·H2O
Mohs
4
Bronze colored crystal aggregates of bartonite from California (Coyote Peak, Coastal Range, Humboldt County, California, United States of America). Bartonite is a very rare potassium sulphide with formula K6Fe20S26S, only known from 6 localities worldwide, this one being from the type locality in Coyote Peak. Potassium is a very rare element in sulphides: of more than 5000 mineral species known only 5 are potassium sulphides. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Bartonite

bartonite
Mineral

Barwoodite

barwoodite

Formula
Mn²⁺6Nb5+(SiO4)2O3(OH)3
Mineral

Barylite

barylite

Formula
BaBe2Si2O7
Barysilite Locality: Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA (Locality at mindat.org) An EXCELLENT specimen of pearlescent, platy barysilite on matrix from the famous Franklin Mine of New Jersey. Barysilite is a RARE lead, manganese silicate. The matrix includes fluorescent green willemite. Fine provenance. Ex George Elling and Seaman Museum Collections. 4.6 x 2.7 x 1.9 cm Mineral

Barysilite

barysilite

Formula
Pb8Mn²⁺[Si2O7]3
Crystals of barite on a dolomite crystal matrix (6.0 × 4.0 × 1.5 cm). Found from Cerro Warihuyn, Miraflores, Huamalies, Huanuco, Peru. Mineral

Baryte

baryte

Formula
BaSO4
Barytocalcite Locality: Blagill Mine, Nent Valley, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK (Locality at mindat.org) Size: 8.6 x 7.7 x 3.7 cm. A fine specimen of bladed barytocalcite from the Type Locality- the only mine in the world where barytocalcite has been mined as an ore. This is a large specimen with unusually large and isolated crystals, shooting up in every direction on the matrix. The grayish-white blades have a matte lustre. Ex. Richard Barstow Collection, a very well-known English dealer and collector, who personally collected this piece. Mineral

Barytocalcite

barytocalcite

Formula
BaCa(CO3)2
Mineral

Barytolamprophyllite

barytolamprophyllite

Formula
(BaK)Ti2Na3Ti(Si2O7)2O2(OH)2
Bassanite Locality: Kimba, Eyre Peninsula, South Australia, Australia Original description: A 3.0 by 2.6 cms white mass with some Gypsum crystals. JSS specimen and photo. Mineral

Bassanite

bassanite

Formula
CaSO4·0.5H2O
Bassetite Locality: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Vohenstrauß, Oberpfälzer Wald, Upper Palatinate, Bavaria, Germany (Locality at mindat.org) Picture width 2 mm. Collection and photograph Christian Rewitzer Mineral

Bassetite

bassetite

Formula
Fe²⁺(UO2)2(PO4)2 * 10H2O
Mohs
2.5
Mineral

Bassoite

bassoite

Formula
SrV⁴⁺3O7·4H2O
Bastnäsite-(Ce) Locality: Zagi Mountain (Zegi Mountain), Mulla Ghori, Khyber Agency, Federally Administered Tribal Areas (FATA), Pakistan (Locality at mindat.org) Size: 5.0 x 4.2 x 2.8 cm. The famous Trimouns Quarry in France was probably the best known locality for Bastnasite-(Ce) in the world until Zagi Mountain came along. These fairly new specimens have redefined the species for size and quality of crystals. This miniature specimen features a small (2.5 mm) very gemmy, rich honey-orange color hexagonal crystal of Bastnasite-(Ce) with very sharp faces and good luster. It seems as though this locality has produced less and less of these outstanding specimens over the last few years. Mineral

Bastnäsite-(Ce)

bastnäsite-(Ce)

Formula
Ce(CO3)F
Bastnäsite-(La) Locality: Jones Mill Quarry (Martin Marietta Quarry; Highway 51 Quarry; Mid-State Quarry), Magnet Cove, Hot Spring County, Arkansas, USA Original description: Tan rosettes of micaceous flakes of Bastnasite-(La) in calcite vug, field of view 3 mm, Collected by J. Matlock. ID confirmed by SEM-EDS & XRD (Art Smith, unpublished manuscript). K. Nash specimen & image. Mineral

Bastnäsite-(La)

bastnäsite-(La)

Formula
LaCO3F
Mineral

Bastnäsite-(Nd)

bastnäsite-(Nd)

Formula
Nd(CO3)F
Locality: Pyörönmaa pegmatite, Kangasala, Western and Inner Finland Region, Finland Dimensions: 55 mm x 30 mm x 20 mm Brownish red mixture of bastnäsite-(Y), quartz and hematite. White tengerite-(Y) filling in fissures. Collected 2012. Mineral

Bastnäsite-(Y)

bastnäsite-(Y)

Formula
Y(CO3)F