Réf : BH581
Romanechite - Brazil - crystal minerals 5.4 cm / 99g / BH581
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ROMANÈCHITE belongs to the hydroxide group. It contains barium and manganese. Its chemical formula is (Ba,H2O)Mn5O10.
Romanèchite occurs in massive or mammillary form and its color varies from gis to dull or shiny dark black. It is a manganese mineral. Its density varies around 4.5 (1 for water) and its hardness between 5 and 6/10. The line on the porcelain is black-brown. Its name comes from the French locality Romanèche (71).
Formerly, Romanechite bore the name Psilomelane, now abandoned.
Romanèchite occurs in massive or mammillary form and its color varies from gis to dull or shiny dark black. It is a manganese mineral. Its density varies around 4.5 (1 for water) and its hardness between 5 and 6/10. The line on the porcelain is black-brown. Its name comes from the French locality Romanèche (71).
Formerly, Romanechite bore the name Psilomelane, now abandoned.
Unique piece - Contractual photos
Origin: crystal minerals from Brazil
Dimensions: 5.4 x 3.8 x 3.6 cm
Weight: 99 g
