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Macfallite Johnsenite-(Ce) Braunite-I Image

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 Macfallite, Johnsenite-(Ce), Braunite-I

Large Macfallite Image

Mineral: Macfallite: Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3  
Johnsenite-(Ce): Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2  
Braunite-I: Mn++Mn+++6SiO12
Comments: Tiny - less than 1mm - maroon crystals of mcfallite suspended as inclusions in massive quartz along with larger spots of brown johnsenite-(Ce) and braunite.
Location: Artur mine, Jaguaracu, Minas Gerais, Brazil.
Scale: Overall 3 x 2.5 slab.
Copyright: © Tom Loomis / Dakota Matrix
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