Group of globular aggregates of strengite, showing the typical violet colour, classic for the Levaniemi mine.
Green Laubmannite in association (a mixture of dufrénite, kidwellite and beraunite.) and black beraunite.
Former F. Bedognè collection, with label.
Formula :
Fe3+[PO4] * 2 H2O
System: orthorhombic Hardness:3½-4 Rarity:not common
Strunz id:VII/C.9-60 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Named after Johann August Streng (1830-1897), Professor of Mineralogy, University of Giessen, Germany.
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 Specimen weight:85 gr.
 Crystal size:Up to 3 mm
 Overall size: 37mm x 36 mm x 28 mm
 Owner : Minservice (Sondrio - Italy) Minservice Galleries Main 
 This specimen will be shipped by: Minservice
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