elongated crystals up to 1 m long and with a diameter of 15 cm
Quality of samples:
not specified / average specimens
Confirmation
Validity:
Believed Valid
References
References:
Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311