Ohgidani clay deposit, Tobe-cho, Iyo district, Ehime Prefecture, Japan
Harvard Mineralogical Museum specimen no. 122285. Label is about 7 cm across. P. Cristofono photo.
© 2007 Peter Cristofono
Fine grained massive, an alteration product, with small graphite crystals. S378-07 3.0 cm sample. Excalibur Mineral Company specimen.
© 2008, JGW
Bois-de-la-Roche quarry, Saint-Aubin-des-Châteaux, Châteaubriant-Ancenis, Loire-Atlantique, Pays de la Loire, France
Yellowish mica sheets of tobelite associated with galena in quartz (visually identified by PJ Chiappero).
Collection and photo Giorgio Bortolozzi.
Five Mile Pass, Tooele County, Utah, USA
White, thin, sheets of tobelite. From the Tucson Micro Mounters room 2017, George Stevens collection. Rolf Luetcke specimen and photo.
Almost pure pale beige fine-grained mass of tobelite. Purchased in 2016. Now in Steve Sorrell collection.
© Andrew Hodgson