Margarosanite

Margarosanite with minehillite and wollastonite

Origin: Franklin, Sussex County, New Jersey, U.S.A.

Sample size: 7.5 x 5 x 4 cm

 

  

  

Origin: Langban, Filipstad, Varmland, Sweden

Ex. Marcelle and Charles Weber collection and James Zigras collection

Sample size: 5.7 x 2.8 x 1.5 cm

 

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This specimen is unbelievably rich in margarosanite - easily 75% to 80% by volume. Margarosanite occurs as intergrown radiating crystal groups to 1.5 cm in diameter. It is brightly fluorescent under SW UV light. The brighter and silky white areas may be thaumasite. It looks a lot like pectolite however, which is known to fluoresce yellow. John is going with the SW UV response and calls it pectolite. Flink reported specimens of margarosanite as coming from the Lukas and Bjeke workings in the mine.

Origin: Långban, Sweden
Harry von Eckermann Collection

Sample size: 9.4 x 4.5 x 3.4 cm

 

  

 

  

 

  

This specimen has abundant grains of the rare lead bearing silicate margarosanite. Under SW UV light the margarosanite fluoresces bluish white.

Origin: Franklin, Sussex Co., New Jersey, U.S.A.

Ex. Frank Edwards collection

Sample size: 7.5 x 5.2 x 4 cm (top), 8.2 x 6 x 2.4 cm (2nd row), 8 x 7 x 5.5 cm (bottom)

 

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Clear or white, long, thin bladed crystals to 1 cm or more across matrix.

Origin: Långban, Varmland, Sweden

Sample size: 4 x 3 cm x 6 mm

 

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