Presentation :
Etymology: from the Greek "barrus" = heavy, due to its high density.
Its genesis is mainly hydrothermal. It consists of barium, a crumb of lead, a hint of calcium and may co...
Presentation :
Carnelian is a red variety of chalcedony, which is itself a cryptocrystalline variety of quartz. The formula of this mineral family is SiO2. Carnelian owes its color to hematit...
Presentation :
Names) :
Sunstone or Heliolite (variety of oligoclase with inclusions).
Etymology:
Based on the shimmering effect of the inclusions reminiscent of the sun.
Helio...
Presentation :
Names) :
Sunstone or Heliolite (variety of oligoclase with inclusions).
Etymology:
Based on the shimmering effect of the inclusions reminiscent of the sun.
Helio...
Presentation :
Names) :
Sunstone or Heliolite (variety of oligoclase with inclusions).
Etymology:
Based on the shimmering effect of the inclusions reminiscent of the sun.
Hel...
Presentation :
Names) :
Sunstone or Heliolite (variety of oligoclase with inclusions).
Etymology:
Based on the shimmering effect of the inclusions reminiscent of the sun.
Helio...
