This crystal is coloured by hematite. On colourless analcime. A nearby cavity has a colourless calcite crystal. Width of view 4.5mm. Stack of 90 images.
Click on the image below for a higher resolution version.
This crystal is coloured by hematite. On colourless analcime. A nearby cavity has a colourless calcite crystal. Width of view 4.5mm. Stack of 90 images.
Click on the image below for a higher resolution version.