Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load.
These mineral photos are copyrighted by their owners and may not be used without permission.
Borcarite: Ca4MgB4O6(OH)6(CO3)2 Szaibelyite: MgBO2(OH)
Comments: Pale aqua granular borcarite with white fibrous to granular szaibelyite.
Location: Nalednoya, Republic of Sakha, Siberia, Russia.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Borcarite: Ca4MgB4O6(OH)6(CO3)2 Numanoite: Ca4CuB4O6(OH)6(CO3)2
Comments: Zoned borcarite (Bc) crystal with a core of green numanoite (Nm). CanMin 45:307.
Location: Fuka mine, 40 km west-northwest of Okayama City, western Japan.
Scale: See Image.
© Canadian Mineralogist