Sursassite 2.83 ct.

Sursassite

is a manganese silicate with formula Mn2+2Al3(SiO4)(Si2O7)(OH)3 and hardness of 3.

Here is mixed with milky white quartz; the black striae are pyrolusite. A quite rare mineral, and never seen facet.

From Graveglia Valley ( Genova ) Molinello Mine, Italy.

Size: 10.2x8.2x5 mm.

Weight:2.83 ct.

CODE#4065