Hodgkinsonite-troostite 7.20 ct.
Hodgkinsonite-troostite 7.20 ct.
Hodgkinsonite-troostite
Interesting combination of hodginsonite-troosite-franklinite and calcite
The hodginsonite is a Zinc Maganese Silicate Hydroxide with formula Zn2MnSiO4(OH)2
and hardness of 4.5-5. and color is brownish- The Troostite is a Manganese bearing variety of Willemite with formula (Zn,Mn)2SiO4 and hardness of 5.5. color is pinkish,and Franklinite black.
Is partially fluorescent at short wave UV light..
It comes from Franklin,N.J. USA.
Size: 14.9x9.4x4.8 mm.
Weight: 7.20 ct.
CODE#9152