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Aeschynite-(Ce)

• 
  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