Richard Dale's Image Gallery

Biotite: K(Mg,Fe++)3[AlSi3O10(OH,F)2

Comments: Sharp hexagonal plates of dark brown biotite to 2.5 cm. across, with white albite.
Location: Brazil. Scale: 6.9x5.5x3 cm.
© Richard Dale / Dale Minerals

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

Cannizzarite: Pb4Bi6S13

Comments: Very delicate 2 mm. crystals of dark gray cannizzarite on matrix.
Location: Kudryaviy Volcano, Iturup Island, Kurilian Island Chain, Russia. Scale: 3.8x3x2.4 cm.
© Richard Dale / Dale Minerals

Chrysoberyl: BeAl2O4

Comments: Chrysoberyl (alexandrite) sixling twin crystal.
Location: Zimbabwe. Scale: Crystal size 2.3 cm.
© Richard Dale / Dale Minerals

Empressite: AgTe  
Tellurium: Te

Comments: Bronze-colored microcrystals of empressite with bright native tellurium crystals.
Location: Rex mine, Boulder County, Colorado, USA. Scale: 1.9 x 1.4 x 0.7 cm.
© Richard Dale / Dale Minerals

Gregoryite: (Na2,K2,Ca)CO3  
Nyerereite: Na2Ca(CO3)2

Comments: Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in inert argon atmosphere.
Location: Ol Doinyo Lengai Vulkan, Maasai Steppe, East Africa Rift Valley, Tanzania. See Link. Scale: Rock size 2 cm.
© Richard Dale / Dale Minerals

Incaite: Pb4Sn4FeSb2S15

Comments: Formless gray lump of incaite, sawn on 2 sides. Former Franz Bauer (Munich) collection.
Location: The label says "Mejillones, Chile" which is certainly wrong, but Mejillones is a railhead and port which served exports from Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina. Scale: Lump size 2 mm.
© Richard Dale / Dale Minerals

Inyoite: Ca2B6O6(OH)10·8(H2O)

Comments: Glassy gray translucent crystals of inyoite 1.5 cm.+, with minor alteration to white meyerhofferite.
Location: Loma Blanca Mine, Jujuy Province, Argentina. Scale: 5.2x4.1x3.1 cm.
© Richard Dale / Dale Minerals

Johannsenite: CaMnSi2O6

Comments: Rounded glassy prismatic crystals of dark violet brown johannsenite to 1.4 cm. Long.
Location: Consols Mine, Broken Hill, NSW, Australia. Scale: 1.5x1.5x1 cm.
© Richard Dale / Dale Minerals

Juangodoyite: Na2Cu(CO3)2

Comments: Rich blue veinlets of juangodoyite in matrix..
Location: Mina Santa Rosa, Iquique, Chile. Scale: 3.5x2.9x2.2 cm.
© Richard Dale / Dale Minerals

Juanitaite: (Cu,Ca,Fe)10Bi(AsO4)4(OH)11·2(H2O)

Comments: Green juanitaite in quartz matrix, with conichalcite and sulfides.
Location: Gold Hill Mine, Tooele County, Utah, USA. Scale: 5.4 x 4 x 2.6 cm.
© Richard Dale / Dale Minerals

Kipushite: (Cu,Zn)5Zn(PO4)2(OH)6·(H2O)

Comments: Green microcrystals of kipushite on matrix.
Location: Kipushi, Shaba, Zaire. Scale: 10x8x5 mm.
© Richard Dale / Dale Minerals

Kochsandorite: CaAl2(CO3)2(OH)4·H2O

Comments: Pearly circles of radiating white microcrystals of kochsandorite on coal.
Location: Many coal deposit, Bicske-Zsambeki Basin, Tatabanya. Scale: 2.5x1.7x1.1 cm.
© Richard Dale / Dale Minerals

Kurnakovite: MgB3O3(OH)5·5(H2O)

Comments: Very pale lilac-colored crystal of kurnakovite.
Location: Boron, Kramer District, Kern County, California, USA. Scale: 7.2x4x2.5 cm.
© Richard Dale / Dale Minerals

Loparite-(Ce): (Ce,Na,Ca)2(Ti,Nb)2O6

Comments: Sharp penetration twin of cubic loparite-(Ce) about 7 mm. across on phoenite matrix.
Location: Flora Mt., Lovosero massif, Kola Peninsula, Russia. Scale: 3.8x3.3x2.6 cm.
© Richard Dale / Dale Minerals

Nyerereite: Na2Ca(CO3)2  
Gregoryite: (Na2,K2,Ca)CO3

Comments: Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in inert argon atmosphere.
Location: Ol Doinyo Lengai Vulkan, Maasai Steppe, East Africa Rift Valley, Tanzania. See Link. Scale: Rock size 2 cm.
© Richard Dale / Dale Minerals

Oxiberaunite: (Fe+++,Mn+++)Fe+++5(PO4)4O(OH)4·6(H2O)

Comments: Red-brown ball of radiating acicular oxiberaunite (eleonorite) microcrystals, on pegmatitic matrix.
Location: LCA Mine, Bessemer City, Gaston County, North Carolina, USA. Scale: Box size 3.18 cm x 3.18 cm.
© Richard Dale / Dale Minerals

Phosgenite: Pb2(CO3)Cl2

Comments: Terminated, very large crystal of partly transparent, deep brown phosgenite.
Location: Touissit, Morocco. Scale: 7.1x5.5x2.4 cm.
© Richard Dale / Dale Minerals

Sarabauite: CaSb10O10S6

Comments: Deep red crystalline sarabauite in matrix.
Location: Sarabau Mine, Sarawak Province, Borneo. Scale: 2.2x1.2x1 cm.
© Richard Dale / Dale Minerals

Sodalite: Na8Al6Si6O24Cl2  
Winchite: [ ](CaNa)Mg4(Al,Fe3+)Si8O22(OH)2

Comments: Purple sodalite with some crystal faces, supporting a very sharp, transparent winchite crystal, terminated on one end.
Location: Sar-e-Sang, Kokcha Valley, Badakshan Province, Afghanistan. Scale: 11x10x8 mm.
© Richard Dale / Dale Minerals