Kerolite

Kerolite or cerolite is a metamorphic nickel bearing phyllosilicate mineral variety of talc, can be seen as a mixture of serpentine and saponite as well. It has the chemical formula (Mg,Ni)₃Si₄O₁₀(OH)₂·H₂O. It is often considered as a talc variety and it was discredited 1979.

Kerolite
Chrysoprase whose green coloring results from to the addition of kerolite
General
Category	Minerals
Formula	(Mg,Ni)3Si4O10(OH)2·H2O

References

• Mindat with location data
• Webmineral - talc variety