It is named after Dietrich Georg von Kieser (Jena, Germany 1862).

Kieserite commonly occurs in marine evaporites and rarely in volcanic environments as a sublimate. It occurs in association with halite, carnallite, polyhalite, anhydrite, boracite, sulfoborite, leonite, epsomite and celestine.^[4]

Mars edit

In early 2005, Mars Express, a European Space Agency orbiter, discovered evidence of kieserite in patches of Valles Marineris (the largest canyon on Mars), along with gypsum and polyhydrated sulfates. This is direct evidence of Mars's watery past and augments similar discoveries made by the Mars Exploration Rover Opportunity in 2004.

Moons of Jupiter edit

Kieserite might also be a rock-forming mineral in the icy mantle of the outer three Galilean moons (Europa, Ganymede, Callisto). At pressures higher than 2.7 GPa, kieserite transforms to a triclinic crystal structure.^[6]

It is used in the production of Epsom salt and as a fertilizer, the overall global annual usage in agriculture in the mid 1970s was 2.3 million tons.^[7]

Kieserite is also used for cleaning hard water deposits from tiles, stones, and other pool and fountain lining materials. Due to its hardness, which is greater than hard water deposits but less than tiles and other water feature linings, it is blasted at the hard water deposits to remove them.

When used as a fertilizer, response to kieserite is likely where:

• Soil Mg levels are low
• pH is high
• Intensive liming occurs to raise the pH
• Nitrogen is applied as ammonium, as this can lead to an antagonism between ammonium and magnesium
• Compacted soils exist
• There is a period of wet/cold weather
• Dry weather occurs, leading to low magnesium mobility in the soil profile.^[8]

• List of minerals
• List of minerals named after people