7/15/2023 By Colby S.
Howlite, a calcium borosilicate hydroxide, is a borate mineral found in evaporite deposits.
Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or as a gemstone. It can be highly polished and is used for items such as vases, seals, and snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9. Jaspillite is a banded-iron-formation rock that often has distinctive bands of jasper.
Red Lava Rock is made up of porous, volcanic rock ranging in sizes from 1″-1 1/4″ nuggets. The rock comes in shades of reddish-brown, black, and gray. Red Lava Rock is normally used as a low-maintenance, decorative rock – but it is also useful for retaining soil moisture underneath as well as acting as a weed barrier.
