Nearly black in reflected light; dark red in transmitted light
Quality of samples:
Excellent - world class for species or very significant. (!!)
Confirmation
Validity:
Believed Valid
References
References:
NBMG Spec. Pub. 31 Minerals of Nevada; Jungles, G. (1974): Galkhaite: A newly described mineral from Siberia found at the Getchell mine, Nevada. Mineralogical Record 5: 290