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Ben Berger (2)'s Photo Gallery

KER-0CRStaurolite Fe2+2Al9Si4O23(OH)

09311080015643190124304.jpg
River Valley Garnet Mine, Dana Township, Sudbury District, Ontario, Canada

Dimensions: 70 mm x 31 mm x 14.8 mm

Specimen of multiple staurolite crystals "twinned" together. Collected October 2018 with my daughter, Alexandra. Biotite schist matrix removed at home and subsequently photographed by Alexandra Berger. I have her permission to submit this photo to Mindat.org.
Photo ID: 969787     Uploaded by: Ben Berger (2)   View Count: 17   Approval status: Public galleries    Type: Photo - 4416 x 2657 pixels (11.7 Mpix)

4DW-JV4Staurolite Fe2+2Al9Si4O23(OH) , Almandine Fe2+3Al2(SiO4)3 , Biotite K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

05494710015642610678367.jpg
River Valley Garnet Mine, Dana Township, Sudbury District, Ontario, Canada

Dimensions: 69 mm x 57 mm x 54 mm
Largest Crystal Size: 31 mm

The prismatic brown/black crystal is staurolite abutting into red almandine garnet set in a biotite schist. The specimen was collected with my daughter Alexandra from the historic River Valley garnet occurrence in October of 2018. Staurolite is noted as present but I am unaware of any other collected samples or photographs of the mineral. My daughter took the photograph and used Photoshop version CS 5.5 phototacking to process the results. She has given her permission to submit this image.
The staurolite was independently verify by Dr. Andrew Macdonald of Laurentian University, Sudbury Ontario and by mineral collectors, Roger Poulin and Gil Benoit of the Sudbury Rock and Lapidary Society.
Photo ID: 969435     Uploaded by: Ben Berger (2)   View Count: 20   Approval status: Public galleries    Type: Photo - 3572 x 2885 pixels (10.3 Mpix)
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