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Oxy-schorl, Na(Fe2+2Al)Al6Si6O18(BO3)3(OH)3O, Zlatá Idka, Marianna adit, Slovakia. IMA 2011-011

Oxy-schorl, Na(Fe2+2Al)Al6Si6O18(BO3)3(OH)3O, Zlatá Idka, Marianna adit, Slovakia. IMA 2011-011

Fluor-uvite, Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3F, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA. Copyright © Rob Lavinsky & irocks.com. IMA 2011-s.p.

Fluor-uvite, Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3F, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA. Copyright © Rob Lavinsky & irocks.com. IMA 2011-s.p.

Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, Strada Vilante, San Martino al Cimino, Vico volcano, Viterbo, Latium, Italy. Blue-grey prismatic crystals

Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, Strada Vilante, San Martino al Cimino, Vico volcano, Viterbo, Latium, Italy. Blue-grey prismatic crystals

Fluor-buergerite, Mexquitic, San Luis Potosi, Mexico

Fluor-buergerite, Mexquitic, San Luis Potosi, Mexico

Feruvite,  	(Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 , on albite, Vitosha mountain, Bulgaria. 14x7x3, mined 1993

Feruvite, (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 , on albite, Vitosha mountain, Bulgaria. 14x7x3, mined 1993

Olenite, Na(Al3)Al6(Si6O18)(BO3)3O3(OH),  Curiglia, Curiglia con Monteviasco, Veddasca Valley, Varese Province, Lombardy, Italy

Olenite, Na(Al3)Al6(Si6O18)(BO3)3O3(OH), Curiglia, Curiglia con Monteviasco, Veddasca Valley, Varese Province, Lombardy, Italy

Povondraite,  	(Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 ,  Alto Chapare District, Cochabamba Department, Bolivia. Black, pseudocubic crystals of the rare tourmaline-group mineral Povondraite

Povondraite, (Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 , Alto Chapare District, Cochabamba Department, Bolivia. Black, pseudocubic crystals of the rare tourmaline-group mineral Povondraite

Oxy-vanadium-dravite, Na(V)3(V4Mg2)Si6O18(BO3)3(OH)3O, Brumado Mine, Brumado, Bahia, Brazil

Oxy-vanadium-dravite, Na(V)3(V4Mg2)Si6O18(BO3)3(OH)3O, Brumado Mine, Brumado, Bahia, Brazil

Chromo-alumino-povondraite, Na(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3O, NYSM 22980

Chromo-alumino-povondraite, Na(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3O, NYSM 22980

Strengite - Pink, bladed, stellate spray of strengite crystals on matrix.  - Indian Mountain, Cherokee County, Alabama, USA.

Strengite - Pink, bladed, stellate spray of strengite crystals on matrix. - Indian Mountain, Cherokee County, Alabama, USA.

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