Kainite


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Related to Kainite: langbeinite, Kainate

kainite

[′kī‚nīt]
(mineralogy)
MgSO4·KCl·3H2O A white, gray, pink, or black monoclinic mineral, occurring in irregular granular masses; used as a fertilizer and as a source of potassium and magnesium compounds.

Kainite

 

a mineral of the group of complex sulfates. Its chemical composition is RMg(SO4)Cl.3H2O. It crystallizes in a monoclinic system. It usually forms dense grainy masses; less frequently, tabular or prismatic crystals. The color is yellowish or whitish gray, sometimes reddish. Its hardness on the miner-alogical scale is 2.5–3.0, and its density is 2, 150 kg/m3. It dissolves readily in water and has a bitter salty taste.

Kainite is formed in salt-bearing beds when marine lagoonsand enclosed salty continental lakes rich in soluble sulfates dryup. Together with other potassium salts, it is found in the USSR (Kalush and Stebnik, Ukrainian SSR) and abroad (Stassfurt, GDR). It is used as a chemical potassium-sulfate fertilizer andin the production of mixed fertilizers.

References in periodicals archive ?
* Formations of potassium salts comprising alternate beds of kainite (KCl.MgS|O.sub.4~.3|H.sub.2~O) and rock salt.
In over 10 years some 1.5 Mt of kainite were extracted for use in the chemical plants which the mining company itself operated near Syracuse, for the production of fertilizers.
The company constructed a pre-concentration plant at the mine and, as the water necessary for processing was not available at that site, transported the enriched kainite by cableway to a further plant at Campofranco, a distance of 30 km.
As mining progressed, seams of kainite were encountered, and Realmonte thus became the first Sicilian mine from which it is possible to extract either rock salt or kainite, according to demand.
Initially the concession area was very limited, but discovery of the kainite caused the company to seek an extension to the west.
Pantanelle was conceived as a rock salt mine and worked as such until a few years ago, when prospecting towards the north led to the discovery of kainite
The mine is currently producing about 700 t/d of rock salt and up to 500 t/d of kainite and its reserves are certainly sufficient for more than 30 years at current rates of extraction.
This mine, opened only for the mining of kainite, has suffered problems with its main shaft.
The potential for SOP operations, coupled with the feasibility study previously completed on MOP operations, demonstrates the uniqueness of Allana's project, which through its sylvinite and kainite resources has the potential to produce MOP and SOP with industry-leading capital-expenditure and operating-cost profiles."
The kainite resources occur in a kainite horizon that is interpreted as a primary evaporite unit in the basin and has been intersected in diamond drilling in most of the mining license area.