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) :
Petalite / Castorite.
Etymology:
From the Greek petalon=leaf (d'Andrade, 1800) in allusion to the petal-shaped cleavage.
Color :
Colorless (most...
Presentation :
Names) :
Petalite / Castorite.
Etymology:
From the Greek petalon=leaf (d'Andrade, 1800) in allusion to the petal-shaped cleavage.
Color :
Colorless (most...
Presentation :
Names) :
Petalite / Castorite.
Etymology:
From the Greek petalon=leaf (d'Andrade, 1800) in allusion to the petal-shaped cleavage.
Color :
Colorless (mos...
Presentation :
Names) :
Adularia moonstone.
Etymology:
Moonstone: Referring to the bluish effect (adularescence) reminiscent of the moonlight. Trade name. | Adularia: From Mount ...
Presentation :
Names) :
Adularia moonstone.
Etymology:
Moonstone: Referring to the bluish effect (adularescence) reminiscent of the moonlight. Trade name. | Adularia: From Mount ...
