Berthierine (FeII ,FeIII ,Al)3 (Si,Al)2 O5 (OH)4
Serpentine (subgroup) —
0
0
—
Mineral, Aluminosilicate , Hydroxide
Bertrandite Be4 Si2 O7 (OH)2
—
—
Open
Bertrandite crystals from Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal. Field of View: 5 mm.
©
Photo by César Menor-Salván (via Wikimedia Commons), CC-BY 3.0
1
0
—
Mineral, Hydroxide , Silicate
Beryl Be3 Al2 Si6 O18
Beryl (group) Goshenite , Heliodor , Morganite , Aquamarine , Red beryl , Emerald
Open
Beryl specimen from Violet Claims, Wawa Mountains, Beaver Co., UT, USA
©
Photo by Chip Clark, via Smithsonian National Museum of Natural History
8
0
—
Mineral, Aluminosilicate
Beryl (group) (MIII ,MII )4 [Be6 Si12 O36-z (OH)z 2 O)y A x A =mostly Na
—
Bazzite , Johnkoivulaite , Stoppaniite , Beryl , Pezzottaite , Avdeevite
0
0
—
Silicate , Group , Hydroxide , Hydrated
Beryllium Be
—
—
Open
Beryllium, >99 % pure, crystalline big fragment >140 g
©
Photo by Alchemist-hp (pse-mendelejew.de), via Wikimedia Commons. CC-BY-NC-ND 3.0
2
1
SXES
Metal , Element
Betafite (group) (Ca,U)2 (Ti,Nb,Ta)2 O6 (OH)
Pyrochlore (supergroup) —
0
0
—
Hydroxide , Group
Biotite K(Mg,Fe)3 AlSi3 O10 (OH,F)2
Mica Siderophyllite , Fluorophlogopite , Tetraferriphlogopite , Fluorotetraferriphlogopite , Phlogopite , Tetraferriannite , Annite , Fluorannite , Eastonite , Oxyphlogopite
Open
Biotite specimen from Rist Mine, Hiddenite, Alexander County, North Carolina, USA
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
0
2
EDS
Aluminosilicate , Hydroxide , Subgroup
Bismuth Bi
—
—
Open
Ultrapure bismuth forms hopper crystals when cooling from the melt. A thin oxide layer forms, creating interference colors.
©
Photo by David Abercrombie (via flickr), CC-BY-SA 2.0
17
2
SXES
Metal , Mineral , Element
Bixbite Be3 Al2 Si6 O18
—
—
Open
©
Photo by Doeverbeithough (via Wikimedia Commons), CC-BY-SA-4.0
0
0
—
Aluminosilicate
Boehmite AlO(OH)
—
—
11
0
—
Mineral, Hydroxide
Bolotinaite (Na7 ☐)(Al6 Si6 O24 )F·4H2 O
Sodalite (group) —
0
0
—
Hydrated , Mineral, Aluminosilicate , Halide
Boltwoodite (H3 O)(Na,K)(UO2 )SiO4 ·(H2 O), (K,Na)(UO2 )(SiO3 OH)·1.5H2 O
Uranophane (group) —
Open
Boltwoodite on calcite, from Goanikontes Claim, Arandis, Swakopmund District, Erongo Region, Namibia
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
5
0
—
Uranyl , Mineral, Silicate , Hydroxide , Hydrated
Boracite Mg3 B7 O13 Cl
Boracite (group) —
Open
Dodecahedron of boracite, from the type locality at Lüneburg Kalkberg, Lower Saxony, Germany. Size: 1.2 x 1.1 x 0.9 cm
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
0
—
Mineral, Borate , Halide
Boracite (group) (Mg,MnII ,FeII )3 B7 O13 Cl
—
Ericaite , Trembathite , Chambersite , Boracite , Congolite
0
0
—
Borate , Halide, Group
Borcarite Ca4 MgB4 O6 (CO3 )2 (OH)6
—
—
Open
Borcarite with small white crystals of cahnite, from Huanggang Fe-Sn deposit (Huanggangliang Mine), Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
4
0
—
Mineral, Hydroxide , Borate , Carbonate
