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Braunite-I, Macfallite, Johnsenite-(Ce)
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| Mineral: | Braunite-I: Mn++Mn+++6SiO12 Macfallite: Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3 Johnsenite-(Ce): Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 | ||||
| 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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