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Darapskite

#38439

Darapskite

#38439
Availability
Sold
Size
2 x 2 x 1.5 cm - Thumbnail 
Formula
Na3(SO4)(NO3)·H2O (RRUFF)
Locality
Oficina Lautaro, Taltal, Antofagasta, Chile

Layerd mineral specimen of probably all halides or nitrates. It is a portion from the type specimen according to the Gebhard label (see prov tab). I am not sure which layer is the Darapskite and it may very well be a component of one of the layers. The central layer is probably Halite. The flat parts have crude tabular crystal terminations.

It is as the Gebhard label indicates a "cotype" specimen of the type from 1891. See label in prov. tab.

Type Locality, Cotype

Darapskite

Formula
Na3(SO4)(NO3)·H2
Crystal System
Monoclinic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
2.5 

Data courtesy of Webmineral.

Special Info
Type Locality
Special Info
Cotype

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