Astrophyllite Specimen #2

Astrophyllite [(K,Na)₃(Fe⁺⁺,Mn)₇Ti₂Si₈O₂₄(O,OH)₇] is a hydrated potassium-iron-titanium silicate. It is typically classified as a phyllosilicate, like muscovite and biotite mica. Astrophyllite was discovered in 1854 in Norway, and has been found at less than ten other locations around the globe!

It's name comes from the Greek words for "star leaf" and has a gorgeous metallic glimmer.

Mounted in a small display box with a label bearing the mineral name, chemical formula, and origin.

Dimensions & Specifications

Specific Gravity: 3.2-3.4
Hardness: 3-4
Material: Astrophyllite [(K,Na)₃(Fe⁺⁺,Mn)₇Ti₂Si₈O₂₄(O,OH)₇]
Origin: Russia