Bright sulphur-yellow grains of bystrite together with blue lazurite crystals in white calcite marble with minor pearly colourless Fe0free phlogopite. Note that on this side of the specimen bystrite replace lazurite. Lets look on the back side. Specimen size is 3.5x3.5x2 cm. Pavel M. Kartashov collection and photo.
This photo has been shown 310 times
Photo added: 23rd Jan 2009