salt
The mineral produced at Lake Grassmere in Marlborough is salt. Lake Grassmere is a natural salt evaporation pond where seawater is evaporated to produce the salt.
Lake Grassmere, a shallow lake series near Blenheim in Marlborough. They will have a website with info on it. look for 'saltworks+new zealand'.
Lake Grassmere
bum bum
Lake Grassmere (Kapara Te Hau) in the northeast of the South Island.
The Little Manitou Lake is the lake in Saskatchewan
BORAX
Salt
Lake Grassmere. Actually though the plant was designed originally as a solar operated works, it was found that the main evaporative mechanism was wind evaporation. So the ponds were re-designed, and from memory, the total production (but with some other improvements) lifted to about six times the original design target.
Walker Lake is the third largest lake in Nevada at 32,192 acres. It is a natural lake located in rural Mineral County, about 75 miles southeast of Reno.
SALT
i think you have to wait till winter