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Blatterite: (Mn++,Mg)35Sb3(Mn+++,Fe+++)9(BO3)16O32
Comments: Small black blatterite crystals in hausmannite, some with manganosite. Location: Kittelgruvan, Nordmark, Sweden. Scale: Box Size 1 x 1 cm. © Sonke Stolze / Systematic Minerals
Burangaite: (Na,Ca)2(Fe++,Mg)2Al10(PO4)8(OH,O)12·4(H2O) Gatumbaite: CaAl2(PO4)2(OH)2·(H2O)
Comments: Small, blue burangaite crystals in beige gatumbaite. Location: Horrsjoberg, Torby, Värmland, Sweden. Scale: Micro-mount Size. © Sonke Stolze / Systematic Minerals
Chromceladonite: KCrMg(Si4O10)(OH)2
Comments: Greenish gray, pearly aggregate of chromceladonite. Location: Srednaja Padma, Onega Karelia, Russian Federation. Scale: Box Size 2 x 2 cm. © Sonke Stolze / Systematic Minerals
Frankamenite: K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O)
Comments: Grayish lilac, fine-grained frankamentite. Location: Murun Massif, Irkutsk District, Russia. Scale: Specimen Size 3.5x2.5x2.5 cm. © Sonke Stolze / Systematic Minerals
Hilairite: Na2ZrSi3O9·3(H2O)
Comments: Brown-yellow hilairite grains with white, prismatic natrolite crystals. Location: Malerod, Larvik, Norway. Scale: See Box (2 x 2 cm). © Sonke Stolze / Systematic Minerals
Katoptrite: (Mn,Mg)13(Al,Fe+++)4Sb+++++2Si2O28
Comments: Red-brown grains of katoptite in matrix. Location: Jakobsberg, Nordmark, Sweden. Scale: Box Size 4x6 cm. © Sonke Stolze / Systematic Minerals
Kinichilite: Mg0.5[Mn++Fe+++(TeO3)3]·4.5(H2O)
Comments: Red masses of kinichilite in quartz. Location: Bambolla Mine,Moctezuma, Sonora, Mexico. Scale: See Specimen Tray. © Sonke Stolze / Systematic Minerals
Lindqvistite: Pb2(Mn++,Mg)Fe+++16027
Comments: Black-metallic grains of lindqvistite. Location: Jakobsberg, Nordmark, Värmland, Sweden. Scale: Box Size 4 x 6 cm. © Sonke Stolze / Systematic Minerals
Lithiotantite: Li(Ta,Nb)3O8
Comments: White lithotantite crystals. Location: Ognevka Deposit, Kalbinskii Range, Kazakhstan. Scale: Specimen Size 3x2 mm. © Sonke Stolze / Systematic Minerals
Petersenite-(Ce): (Na,Ca)4(Ce,La,Nd)2(CO3)5
Comments: Reddish brown specks of petersenite-(Ce) in matrix. Location: Mt. St. Hilaire, Quebec, Canada. Scale: Box Size 4 x 6 cm. © Sonke Stolze / Systematic Minerals