Occurs as a product of weathering of near-surface veins of colemanite and priceite and occurs as fine-grained, soft clots up to 75 microns diameter; less common are single crystals to 15 microns diameter and 2 microns thick.
Quality of samples:
not specified / average specimens
Erd, R.C., J.F. McAllister, and A.C. Vlisidis (1970) Wardsmithite 5CaO •
MgO •12B2O3 •30H2O, a new borate mineral from the Death Valley region, California. American Mineralogist: 55: 349-357; McAllister, James Franklin (1970) Geology of the Furnace Creek borate area, Death Valley, Inyo County, California. California Division of Mines and Geology Map Sheet 14, 9 pp.; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 241 & 243.