Potassium Feldspar
(Orthoclase)
Crystal Network
Catamarca Province
Argentina
Muscovite Mica
Crystals
BRAZIL
Diagnostic Features
Hardness : 2-2.5
Streak : White to none.
Luster : Nonmetallic
Specific Gravity : 2.8
Cleavage : Present in one direction.
Fracture : None
Other : Mineral separates into perfectly parallel sheets.
Identification Tips
1. Muscovite, like the other types of mica, consist of seemingly endless, flexible, transparent sheets ( see picture). Therefore, mica crystals are referred to as "books." You can separate the sheets easily with your fingernail.
2. Muscovite possesses a silvery white to golden yellow sheen and this distinguishes it from other common mica types.
Photographs by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
[Crystals in Calcite]
Shelby
Cleveland County
NORTH CAROLINA
[Botryoidal Crystals in Pegmatite]
Branchville Mine
Branchville
Fairfield County
CONNECTICUT
Photographed by Michael Amadeus Klimetz
Photographed by Michael Amadeus Klimetz
[Botryoidal Crystals in Pegmatite]
Branchville Mine
Branchville
Fairfield County
CONNECTICUT
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystal in Pegmatite]
Orchard Pegmatite
Oxford County
MAINE
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystals in Pegmatite]
Oxford County
MAINE
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystals in Pegmatite]
Oxford County
MAINE
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystal Cluster]
Aracui
Minas Gerais
BRAZIL
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystal Cluster]
Aracui
Minas Gerais
BRAZIL
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystal Cluster]
Aracui
Minas Gerais
BRAZIL
Photographed by Michael Amadeus Klimetz
[Hexagonal Crystal Cluster]
Aracui
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Cluster on Clevelandite]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Cluster on Clevelandite]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Cluster on Clevelandite]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Cluster on Clevelandite]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Plate]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Plate]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Crystal Plate]
Galileia
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Brown Crystal Plate]
Guibault Mine
Hiddenite
Alexander County
NORTH CAROLINA
Photographed by Michael P. Klimetz
[Brown Crystal Plate]
Guibault Mine
Hiddenite
Alexander County
NORTH CAROLINA
Photographed by Michael P. Klimetz
[Brown Crystal Plate]
Guibault Mine
Hiddenite
Alexander County
NORTH CAROLINA
Photographed by Michael P. Klimetz
[Silver Hexagonal Crystal Stack]
Emmons Pegmatite
Uncle Tom Mountain
Greenwood
Oxford County
MAINE
Photographed by Michael P. Klimetz
[Silver Hexagonal Crystal Stack]
Emmons Pegmatite
Uncle Tom Mountain
Greenwood
Oxford County
MAINE
Photographed by Michael P. Klimetz
[Silver Hexagonal Crystal Stack]
Emmons Pegmatite
Uncle Tom Mountain
Greenwood
Oxford County
MAINE
Photographed by Michael P. Klimetz
[Silver Hexagonal Crystal Stack]
Soda Spar Mine
Custer Mining District
Custer County
SOUTH DAKOTA
Photographed by Michael P. Klimetz
[Silver Hexagonal Crystal Stack]
Soda Spar Mine
Custer Mining District
Custer County
SOUTH DAKOTA
Photographed by Michael P. Klimetz
[Silver Paralellogram-Shaped Crystal Stack]
Aracuai
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Silver Paralellogram-Shaped Crystal Stack]
Aracuai
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Silver Paralellogram-Shaped Crystal Stack]
Aracuai
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Intergrown Silvery Hexagonal Crystal Plates]
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Intergrown Silvery Hexagonal Crystal Plates]
Minas Gerais
BRAZIL
Photographed by Michael P. Klimetz
[Intergrown Silvery Hexagonal Crystal Plates]
Minas Gerais
BRAZIL
