Barylite

  
 
  
 
  
 
  
Barylite on aegirine
  
Barylite and quartz on aegirine
Origin: Chilwa Alkaline Area, Mt. Malosa, nr. Zomba, Malawi
Sample size: 1.3 x 1.1 x 0.7 cm (top), 1.7 x 0.9 x 0.8 cm (2nd row), 2.3 x 1.6 x 1 cm (3rd row), 4.1 x 1 x 0.7 cm (4th row), 3 x 1.9 x 0.8 cm (5th/bottom row)
 
  
  
This specimen is mostly massive, fine grained hematite with numerous flat lying and enormous crystals of barylite. The largest is 1.2 cm across!! This specimen was found by Finneman at the 150 meter level of the Hindenburg workings. The crystals on this specimen exceed those from this same find that are in the Swedish Museum of Natural History. Other species present are garnet and calcite.
  
  
  
This specimen was found on the dumps by Kjell Gatedal of the School of Mines and Geology in Filipstad, Sweden. The rock is comprised of garnet and magnetite rich skarn with open cavities containing crystals of tilasite (pink), abundant romeite (reddish brown) and bright white barylite. The largest barylite crystals are over 4 mm in length.
Origin: Långban, Sweden
Harry von Eckermann Collection
Sample size: 6.3 x 4.3 x 1.5 cm (top/2nd row), 8.2 x 7 x 5.5 cm (3rd/4th/bottom row)
 
     
This specimen consists of an aegirine crystal with a spray of terminated crystals of barylite. The largest in the spray is 1.3 cm in length and is doubly terminated.
Origin: Chilwa Alkaline Area, Mt. Malosa, nr. Zomba, Malawi
Sample size: 2.3 x 1.3 x 0.7 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

  
Small vug to 6mm with at least one clear to white prismatic crystal to about 0.75mm , terminated, free standing with larger, white, milky possible tilasite (red under SW UV).
  
Light pink to milky white, lustrous and prismatic crystal to 2 mm in a large vug associated with yellow berzeliite and hedyphane in tilasite matrix.
Origin: Långban mine, Bergslagen ore distr., Filipstad, Värmland, Sweden (type locality)
Sample size: 3 x 2 x 1.5 cm (top), 7.5 x 5 x 3.5 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Gray-white barylite in tilasite
Origin: Långban, Värmland, Sweden
Sample size: 2 x 2.3 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

 

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