Pocket Mindat

Kaiserer quarry (Deisl quarry), Hüttwinkl valley, Rauris valley, Hohe Tauern, Salzburg, Austria
© 2004 ROM
Formula:
(Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6
System: Orthorhombic
Name:
From the Greek αισχύνη ("aeschyne") for "shame", alluding to the fact that early chemists had difficulty with separations of titanium from zirconium in some samples, and the dominant lanthanide element in the composition.
IMA Status: Valid (Approved)
Type Locality:
Gadolinite Pit (Pits Nos. 75 & 76), Dolgiye Mosty reserve-guard station, Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Dana 8th: 8.3.6.1
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
Hardness (Mohs): 5 - 6
Density: 5.19 g/cm3 (measured)
5.617 g/cm3 (calculated)
Lustre: Resinous,Waxy,Sub-Metallic
Diapheny: Translucent
Diapheny: brittle
Colour: Black, brown, light brown to yellow
Streak: Nearly black to brown