General Information:
Chemical Formula:
(Mn,Fe,Al,Mg)8(Mn,Mn)8(Ca,Sr,Na)12(VO4,AsO4)16(OH)20·8(H2O)
Environment:
Uranium-vanadium deposits in a sabka limestone.
Locality:
Cliff face outcrop of the Todilto limestone, T13N-R10W Sec 25, Valencia county, New Mexico.
Name Origin:
Named after the Atchison, Topeka and Santa Fe Railroad Company, because if its contribution to the exploration and development of the New Mexico uranium deposits.
Physical Properties:
Cleavage:
[???] Perfect
Color:
brown.
Density:
3.379
Habits:
Encrustations - Forms crust-like aggregates on matrix., Acicular - Occurs as needle-like crystals.,
Luster:
Subadamantine
Streak:
brown
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