Plagioclase with composition of Andesine or Oligoclase
Quality of samples:
not specified / average specimens
Confirmation
Validity:
Believed Valid
References
References:
[Brauns, R. , Die Mineralien der Niederrheinischen Vulkangebiete, Schweizerbart, Stuttgart, 1922] [Blass, G., Emmerich, F., Graf, HW., Tschörtner, J., Minerale der Eifelvulkane, CD, published by authors, 2006]