• Pocket Mindat

• Return to Index: A
• Return to Main Index

Alstonite

• 
  Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
  © P N Min.

• Formula:
  BaCa(CO₃)₂

• System: Triclinic

• Name:
  After the original locality near Alston, England.

• IMA Status: Valid (Grandfathered)

• Type Localities:
  Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK

  ---

  Fallowfield Mine, Acomb, Hexham, Tyne Valley, Northumberland, England, UK

• Dana 8th: 14.2.5.1
  
  14 : ANHYDROUS NORMAL CARBONATES
  2 : AB(XO₃)₂

• Hardness (Mohs): 4 - 4½

• Density: 3.67 g/cm³ to 3.711 g/cm³ (measured)
  3.67 g/cm³ (calculated)

• Lustre: Vitreous

• Diapheny: Transparent,Translucent

• Colour: Colourless to snow white, yellow-gray; pale gray, pale cream, pink to pale rose-red

• Streak: White