Mineral Specimen Images (B)

Bokite: (Al,Fe+++)1.3(V++++,Fe)8O20·4.7(H2O)

Comments: Tannish "spots" as very micro acicular bokite crystals filling in between grains. Eaton Collection.
Location: Monument #2 mine, Apache Co.,, Arizona, USA. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Boleite: KPb26Ag9Cu24Cl62(OH)48

Comments: Floater crystal of deep, inky blue boleite with interpenetration twinning.
Location: Amelia Mine, Santa Rosalia, Baja California, Mexico. Scale: 0.7 cm.
© John Veevaert

Boleite: KPb26Ag9Cu24Cl62(OH)48  
Cumengite: Cu20Pb21Cl42(OH)40·6H2O

Comments: Inky blue cumengite "sixling" epitaxially overgrown on boleite.
Location: Amelia mine, Santa Rosalia, Baja California Sur, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Bolivarite: Al2(PO4)(OH)3·4-5(H2O)

Comments: Yellow translucent mass of bolivarite.
Location: Pontevedra, Galicia, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Boltwoodite: HK(UO2)(SiO4)·1.5(H2O)

Comments: Sprays of boltwoodite covering matrix.
Location: Rossing, Namibia. Scale: Size Not Given.
© John Veevaert

Boltwoodite: HK(UO2)(SiO4)·1.5(H2O)

Comments: Bright yellow, prismatic crystals of boltwoodite.
Location: Rössing mine, Swakopmund District, Namibia. Scale: Picture size 2.5 mm.
© Paul M. Schumacher

Boltwoodite: HK(UO2)(SiO4)·1.5(H2O)

Comments: Yellow, globular aggregates of boltwoodite on a ferruginous matrix.
Location: Repete Mine, San Juan County, Utah, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Bonattite: CuSO4·3(H2O)

Comments: Blue bonattite on siliceous sinter.
Location: Steamboat Springs, Washoe County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bonshtedtite: Na3Fe++(PO4)(CO3)

Comments: Oriented gray bands of bonshtedtite in calcite.
Location: Kovdor Massif, Kola Peninsula. Scale: 3.9x2.3x1.5 cm.
© Richard Dale / Dale Minerals

Boothite: CuSO4·7(H2O)  
Halotrichite: Fe++Al2(SO4)4·22(H2O)

Comments: Pale blue earthy boothite with white halotrichite.
Location: Copiapo, Atacama, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Boracite: Mg3B7O13Cl

Comments: Clear, pale green pseudo-cubic boracite crystal.
Location: Sonderhausen, Thuringia, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Boracite: Mg3B7O13Cl

Comments: A greenish crystal of boracite, a tetrahedron modified by cube and dodecahedral faces.
Location: Bernburg, Sachsen-Anhalt, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Boracite: Mg3B7O13Cl  
Hilgardite: Ca2B5O9Cl·(H2O)

Comments: Sub-mm reddish orange crystals of hilgardite on white boracite.
Location: Boulby Mine, Loftus, Cleveland, Great Britain. Scale: 1.5 x 2.5 cm.
© John Veevaert

Boralsilite: Al16B6Si2O27  
Grandidierite: (Mg,Fe++)Al3(BO4)(SiO4)O

Comments: B&W PPL image of aggregates of boralsilite in quartz near grandidierite. Pyrite is partially replaced by oxide. Abbrev: A+B = Secondary andalusite, B = boralsilite, G = grandidierite, P = pyrite, Q = quartz. (AmMin v93:294).
Location: Pegmatites from the Larsemann Hills, East Antarctica. Scale: See Image.
© American Mineralogist

Borax: Na2B4O5(OH)4·8(H2O)

Comments: Translucent crystal of borax preserved in oil to prevent dehydration to tincalconite.
Location: Searles Lake, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Borcarite: Ca4MgB4O6(OH)6(CO3)2  
Szaibelyite: MgBO2(OH)

Comments: Pale aqua granular borcarite with white fibrous to granular szaibelyite.
Location: Nalednoya, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Borcarite: Ca4MgB4O6(OH)6(CO3)2  
Numanoite: Ca4CuB4O6(OH)6(CO3)2

Comments: Zoned borcarite (Bc) crystal with a core of green numanoite (Nm). CanMin 45:307.
Location: Fuka mine, 40 km west-northwest of Okayama City, western Japan. Scale: See Image.
© Canadian Mineralogist

Bornemanite: BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}·PO4  
Lomonosovite: Na5Ti2O2(Si2O7)(PO4)

Comments: Yellow crystalline bornemanite in dark brown lomonosovite.
Location: Yubileinaya Pegmatite, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bornemanite: BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}·PO4

Comments: Pale yellow or peach colored, massive bornemanite.
Location: Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Bornite: Cu5FeS4

Comments: Metallic, crystalline bornite crystal with bluish tarnish.
Location: Kamoto mine, Kolwezi, Shaba, Dem. Repub. Congo. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals