• Pocket Mindat

• Return to Index: A
• Return to Main Index

Aeschynite-(Y)

• 
  Lohning quarry (Lohninger quarry), Hüttwinkl valley, Rauris valley, Hohe Tauern, Salzburg, Austria
  © Stephan Wolfsried

• Formula:
  (Y,Ca,Fe,Th)(Ti,Nb)₂(O,OH)₆

• System: Orthorhombic

• Name:
  For its relationship to Aeschynite-(Ce), with yttrium as the dominant rare-earth element.

• IMA Status: Valid (Approved)

• Type Locality:
  Urstad feldspar quarry, Hidra (Hitterø), Flekkefjord, Vest-Agder, Norway

• Dana 8th: 8.3.6.3
  
  8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
  3 : AB₂O₆

• Hardness (Mohs): 5 - 6

• Density: 4.82 g/cm³ to 4.93 g/cm³ (measured)
  5.5 g/cm³ (calculated)

• Lustre: Resinous,Waxy,Pearly,Sub-Metallic

• Diapheny: Transparent,Translucent

• Diapheny: brittle

• Colour: Pale yellow, yellow-orange, pale greenish yellow

• Streak: White, pale yellow, reddish yellow