Muscovite var. Ball Peen Mica | Perky Box Specimen | Rare | Branchville, Connecticut
$157.00 CAD
1 Only
This 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 localities in the United States. Opened in the 1870s as a mica mine, it quickly became internationally recognized for its scientific significance after Yale University mineralogists discovered an exceptional variety of rare minerals within its pegmatite. The quarry served as the type locality for several newly identified mineral species and played a key role in advancing the study of pegmatites and mineral formation. It is especially famous for producing the distinctive "ball-peen" muscovite crystals, along with fine specimens of beryl, spodumene, and other rare minerals.
This classic specimen from Connecticut will come protected in a Perky Box. The box will show its age but is just another way to show how old the specimen is. The original label when the specimen was catalogued is also a nice touch.
Name: Mica
Specimen Size: Miniature-Sized
Dimensions: 33x19x16 mm / 1.3x0.7x0.6
Weight: 10.9 Grams / 0.4 Ounces
Origin: Mined in Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
All specimens are authentic with all provenance information provided.
Specimen Information Cards and/or Appraisals are provided when applicable.
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