Macfallite Johnsenite-(Ce) Braunite-I Image
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John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors
Braunite-I
,
Macfallite
,
Johnsenite-(Ce)
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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