senarmontite
ck_admin
March 24, 2021
Discovered in 1851 at Djebel Haminate, in the area of Constantine in Algeria, its name honors the mineralogist Henri Hureau de Senarmont (1808-1862).
oxides
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sapphire
ck_admin
March 24, 2021
Its name comes from the Hebrew “Sappir” which referred for a long time the blue gems, the “most beautiful things”. By 1800, it was shown that the ruby and sapphire were only varieties of the same mineral, corundum. Currently, sapphire corresponds to all the blue
pyrolusite
ck_admin
March 24, 2021
Identified and named in 1827, its name comes from the Greek words meaning “fire” and “who washes”, as it was used to remove from glass its green and brown color due to iron. This is the main element of “dendrites ” black seepage into the
