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Janhaugite

#BAC65909
SOLD
Janhaugite from Gjerdingselva, Nordmarka, Lunner, Oppland, Norway - BAC65909
Janhaugite from Gjerdingselva, Nordmarka, Lunner, Oppland, Norway - BAC65909

Janhaugite

#BAC65909
Availability
Sold
Size
2 x 1.3 x 0.5 cm - Thumbnail 
Formula
(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 (RRUFF)
Locality
Gjerdingselva, Nordmarka, Lunner, Oppland, Norway

Orange subhedral mass showing prism forms to 1mm. There is suppose to be Dalyite on this specimen. I'm not familiar that mineral so could not say.

Type Locality

Janhaugite

Formula
(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Striated, Anhedral Grains 
Cleavage
Distinct, None, None 
Luster
Vitreous (Glassy) 
Color
reddish brown 
Streak
light brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
Special Info
Type Locality
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