conchoidal
Je vous emmène à travers mes vidéos découvrir mon expérience acquise depuis plus de 30 ans a silloner le globe entier à la recherche de pierres précieuses, de rencontre mémorables mais aussi de difficulté parfois …
actualités
serpentine
ck_admin
March 24, 2021
Serpentine, or rather the serpentines, is a group of over 20 minerals quite difficult to differentiate the one from the other, the best known of whom are : antigorite, chrysotile and lizardite. These Phyllosilicates are weathering products of magnesium silicates. The Ophite, sometimes called “ophite
scorzalite
ck_admin
March 24, 2021
Discovered in 1957 in Brazil (Corrego Firo pegmatite, Linopolis, Doce valley, Minas Gerais). Its name honors the Brazilian geologist who discovered it: Evaristo Penna Scorza (1899-1969).
scapolite
ck_admin
March 24, 2021
It owes its name to its prismatic facies (from the Greek “skapos” rod and “lithos”, stone) and designates an isomorphic series going from sodic marialite to calcic meionite. The members of this series are the Wernerite, the Dipyre, the Meionite, the Marialite. The Wernerite, which
