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RM1714   Malachite with calcite
Cu₂(CO₃)(OH)₂
  -  5. Carbonides and nitrates

An interesting and showy Tsumeb specimen, puffball of lustrous primary malachite acicular crystals, nicely disposed on matrix covered with very glassy, colorless, calcite rhombohedral crystals.

Size: 7.5 x 5.2 x 4.7 cm.
Ex. M. Martínez (Barcelona)
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