Jouravskite on Xonotlite
Jouravskite
– Ca3Mn4+(SO4)(CO3)(OH)6·12H2O
Calcite
Talc (1)Diamond (10)
Soft. A fingernail can scratch it.
Did you know?
Nearly half of jouravskite is water. About 42 percent of its weight is water locked inside the crystal itself, which leaves it startlingly light: a density near 1.9, where most minerals run three times that of water or more. In the hand it feels wrong, too light for a stone.
Xonotlite is one of the few minerals industry decided to make rather than mine. Grown in vessels of hot lime and water, its interlocking needles turn into board that shrugs off heat, so much of the xonotlite in use today was never underground at all.
