Selected Minerals – Today: Adamite

Adamite

  • Named after the French mineralogist Gilbert-Joseph Adam (1795 – 1881)
  • Typically occuring in weathered zones above zink ores
  • Formula: Zn2(OH)(AsO4)
  • Space group: Pnnm (No. 58)
  • Crystal system: orthorhombic
  • Crystal class: mmm
  • Lattice parameters: a = 8.30 Å, b = 8.51 Å, c = 6.04, αβγ = 90°

adamite-139150

Picture: Rob Lavinsky, iRocks.com – CC BY-SA 3.0


Crystal structure (click on the picture to download the VESTA file):

adamite

AsO4 tetrahedra (green), ZnO6 octahedra (gray)

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2 thoughts on “Selected Minerals – Today: Adamite

  1. Pingback: Selected Minerals – Today: Adamite — The Fascination of Crystals and Symmetry | Beyond The Veil

  2. Pingback: Keyite – A Complex Copper-Zinc-Cadmium Arsenate | The Fascination of Crystals and Symmetry

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