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Paralstonite

#PD44781
SOLD
Paralstonite from Minerva #1 mine, Hardin Co., Illinois, United States - PD44781
Paralstonite from Minerva #1 mine, Hardin Co., Illinois, United States - PD44781

Paralstonite

#PD44781
Availability
Sold
Size
6 x 4 x 3.5 cm - Sm Cabinet 
Formula
BaCa(CO3)2 (RRUFF)
Locality
Minerva #1 mine, Hardin Co., Illinois, United States
Tagged
carbonate

You will almost never see one of these on the market. It was very rare in the district, and this specimen is superb. It is rich with rice-like and well-formed crystals of Paralstonite, a mineral found in only six worldwide localities. The crystals on this specimen measuring up to 1mm. Some of the crystals on the back side may be alstonite and they are a bit larger and stained with an iron oxide. They may also be Paralstonite, and if so they are very large at 4mm.

This an excellent, very rare, well-crystallized, and rich specimen from the type locality. The matrix is a yellow Fluorite.

Type Locality

Paralstonite

Formula
BaCa(CO3)2 
Crystal System
Trigonal 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Trigonal - Trapezohedral 
Hardness
4-4.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Special Info
Type Locality
Mineralpedia
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