Lake Grassmere is found close to the shore of Cook Strait in the northeastern South Island of New Zealand. A view of from the summit of Mount Victoria, Wellington - Cook Strait stretches to the right (west). ... The South Island The South Island is one of the two major islands of New Zealand, the other being the North Island. ...

Covering an area of 17 km², it has no natural inflow and is prone to strong warm winds. Close to the sea, it also has a very high salinity. Because of this, it is ideal for natural salt extraction. Grassmere has been divided into solar evaporation ponds. Seawater is pumped in, and moved between ponds over several months, increasing in salinity with each successive evaporation period. As salinity increases, crystallised salt forms and is extracted. Salinity is the saltiness or dissolved salt content of a body of water. ... Edible salt is a mineral, one of the few rocks people eat. ... This article or section is in need of attention from an expert on the subject. ... Quartz crystal In chemistry and mineralogy, a crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ...

The Maori name for the lake is Kaparatehau ("wind-blown lake"). In pre-European times it was used as a ready source of food, as it attracts a wide range of waterfowl. Māori (or Maori) is a language spoken by the native peoples of New Zealand and the Cook Islands. ...

Coordinates: 41°44′S 174°10′E Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 1. ...