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A whitish to yellowish hydrous magnesium sulfate mineral, MgSO4·H2O, found in salt residues.

[After Dietrich Georg Kieser (1779-1862), German physician.]


(Minerals) a white mineral consisting of hydrated magnesium sulphate. Formula: MgSO4.H2O
[C19: named after Dietrich G. Kieser (died 1862), German physician; see -ite1]
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Noun1.kieserite - a white mineral consisting of hydrous magnesium sulfate often found in salt mines
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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Sulphur was used in two forms, prior to wheat sowing as kieserite (MgS[O.sub.4] x [H.sub.2]O: 5.1% Mg and 20.0% S) and as a foliar application on the wheat during vegetation (BBCH 55-59) as Epsom salts (magnesium sulphate heptahydrate--MgS[O.sub.4] x 7[H.sub.2]O:10.2% Mg and 32% S[O.sub.3]).
The complete fertilization is equivalent to 1.31 g urea + 1.39 g ERP + 0.88 g MOP + 0.16 g Kieserite + 0.53 g chelated ZnCoBor per experimental unit.
The overall production strategy is to initially produce standard MOP from Sylvite mineralisation and to progressively transition the project to include the production of Granular MOP, standard and granular SOP and K-Mg sulphates from Carnallite, Kainite and Kieserite mineralisation.
In contrast Losak [6] experiments found that the application of phosphorus (fertilizer Amofos), potassium (fertilizer potassium salt of 50% and potassium sulphate) and magnesium (fertilizer Kieserite) did not increase Cd content in the seed.
Specifically, sulfates such as gypsum (hydrated [CaSO.sub.4]) and kieserite (hydrated [MgSO.sub.4]) have been discovered in some areas, 7 [R] including parts of the north polar dune field, Valles Marineris canyon walls, and within other layered sedimentary deposits.
Relationship to other species: It is the cobalt-dominant analogue of kieserite, MgS[O.sub.4]*[H.sub.2]O.
K&S KALI GmbH has launched a new website ( in order to provide information on the mineral compound kieserite, its features and uses as a fertilizer in agriculture.