Aragonite

Aragonite, León.

Composition CO3Ca Calcium carbonate Crystal system Rhombic
Hardness (Moh´s)
 31/2 - 4  Density 2,94
Refractive index 1,53 to 1,68 Birefringence ?
Pleocroisme
 ? Fluorescence various colours.
Fracture
 conchoidal I. Dispertion ?
Cleavage
 distinct Streak white
Absortion:?

  • The name comes from the place where was found: Molina de Aragón. It´s present in crystals.(pseudohexagon), aggregates, stalactites. Transparent to translucent. The colour is white in differents colour shades: yellowish, rosy, bluish, greenish etc. The aragonite it´s a constituent part of pearls and nacre.
  • Localities: A lot. Molina de Aragón (Guadalajara), Toral de los Vados (León), Minglanilla (Cuenca), some places in Catalunya.
  • Confusions: With the Calcite.
  • Treatments: Can be dye.
  • Gemologics uses: To decorate. Facet like a colection stone. For jewels in cab.
  • Our stones are naturals, whitout treatments.
Gems list
Principal
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© Montse Bagué and Josep M. Serrano.Text and photos. Reproduction not allowed without permission.