Ankerite specimens for sale

4 for sale ยท $85โ€“$3,500 USD

29 in the gallery

Ankerite is a carbonate mineral in the dolomite group, with calcium, iron and magnesium in its formula. It commonly forms in rhombohedral crystals and can exhibit a resinous to pearly lustre on fresh faces. Colors range from pale brown to brownish-green, and it often occurs in granular to prismatic aggregates within hydrothermal veins and skarn deposits.

Formula
Ca(Fe2+,Mg)(CO3)2
Rarity
Uncommon
Stability
Stable
Collector interest
Moderate Interest

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Where Ankerite is found

Top localities

  1. Rampgill Mill6 specimens
  2. Simplon Railway Tunnel5 specimens
  3. Alston Moor2 specimens
  4. Mount Diablo pit2 specimens
  5. Alsace1 specimen
  6. Brownley Hill Mine1 specimen
  7. Cambokeels Mine1 specimen
  8. Eagle Mine1 specimen
  9. El Entredicho Mine1 specimen
  10. Frazer's Hush Mine1 specimen

About Ankerite

Notable specimens have come from classic meteorological sites and mining districts in the United Kingdom, the United States, Switzerland, Canada, and Namibia, where well-formed crystals and sizable crusts have been collected. Ankerite often occurs alongside calcite, dolomite, and siderite, sharing paragenetic environments that reflect late-stage hydrothermal activity and contact metamorphism. Collectors value its subtle color, crystal form, and association with other carbonates, which together convey a coherent paragenesis of its geological setting.