A calsium-rich gadolinite. The spacing are slightly larger than ordinary gadolinite. Oftedal postulated that Ca probably occupy a large number of the Fe positions in the structure
Colour:
brown
Quality of samples:
not specified / average specimens
Confirmation
Validity:
Believed Valid
References
References:
Oftedal, I. (1972): Contributions to the Mineralogy of Norway, No 48. Calsium-rich Gadolinite from Kragerø. Norsk Geologisk Tidsskrift 52: 197-200
