Muscovite var. Ball Peen Mica | Perky Box Specimen | Rare | Branchville, Connecticut Mordenite most of these fragments under

most of these fragments under 20 grams

A specimen was submitted to the University of Western Ontario for this very purpose

Albite is thought to help with decision-making

Abitibi-Témiscamingue

These are fairly rare

Muscovite var. Ball Peen Mica | Perky Box Specimen | Rare | Branchville, Connecticut Mordenite most of these fragments underThis is a natural "Ball Peen" Mica specimen from Branchville, Connecticut. Instead of forming flat, book like sheets as muscovite usually does, mica specimens from the Branchville Mica Mine develop a rounded, bulbous termination resembling the rounded end of a ball peen hammer, from which its name is derived. The Branchville Mica Mine, which has been inactive since 1944 and is mostly flooded, is one of the most historically important mineral