Hendricksite
A variety of Minerals
What is Hendricksite?
Hendricksite is a member of the trioctahedral micas group. The mineral was named by Clifford Frondel and Jun Ito in honor of Sterling Brown Hendricks, who studied micas. Zinc in the formula can be replaced with manganese(II) or magnesium. Currently, this is the only mica known for its zinc dominancy. It has a barely detectable radioactivity. It was approved in 1966 by the IMA.
Hendricksite Market Value Calculator
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Hendricksite Localities Map
See where Hendricksite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Coppery brown, bronze-brown, dark reddish brown to reddish black
- Hardness (Mohs)
- 2.5 - 3
- Density
- 3.33 g/cm³
Chemical Properties
- Chemical Formula
- KZn3(Si3Al)O10(OH)2 Zn may be replaced by minor Mg and Mn(II).
- Elements
- Al, H, K, O, Si, Zn
Also Known As
HendricksiteZinc Mica
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