Minerals potassium-rich

Potassium nitrate, essential in the manufacture of black gun powder, was produced by the Chinese, who had developed gun powder by the tenth century AD. The process involved the leaching of soil in which nitrogen from urine had combined with mineral potassium. By the early 1800s, potassium nitrate had become a strategic military chemical and was stiU produced, primarily in India, by using the ancient Chinese method. The caUche deposits in Chile are the only natural source of potassium nitrate (2). These deposits are not a rich source of potassium nitrate, purifying only to about 14% as K O. 

Bowen s reaction series representing the relationship of igneous silicate mineral composition to crystallization temperature. The plagioclase feldspars represent a continuous series grading from the calcium-rich to sodium-rich to potassium-rich forms. The rest of the minerals constitute a discontinuous series in which distinct crystal structures are characteristic of a particular temperature range under which the magma solidified. 

Over longer time scales, clay minerals can undergo more extensive reactions. For example, fossilization of fecal pellets in contact with a mixture of clay minerals and iron oxides produces an iron- and potassium-rich, mixed-layer clay called glauconite. This mineral is a common component of continental shelf sediments. Another example of an authigenic reaction is called reverse weathering. In this process, clay minerals react with seawater or porewater via the following general scheme ... 

Occasionally, especially In alkaline soil, trace elements, although present, may not be soluble due to the high pH, and are therefore unavailable to the plant. On these occasions, additional supplies might be needed (see pp.54-55). Mineral deficiencies can also be caused by too much of another element overdo potassium-rich fertilizers, for example, and you may "lock up" magnesium so that plants develop symptoms of magnesium deficiency. 

De Astis G, Peccerillo A, Kempton PD, La Volpe L, Wu TW (2000) Transition from calc-alkaline to potassium-rich magmatism in subduction environments geochemical and Sr, Nd, Pb isotopic constraints from the island of Vulcano (Aeolian arc). Contrib Mineral Petrol 139 684-703 De Astis G, Kempton PD, Peccerillo A, Wu TW (2005) Geochemical and Sr-Nd-Pb isotope composition of Vulture and Campanian Province volcanics (southern Italy) implications for mantle evolution and geodynamics. Submitted for publication... 

Barton M (1979) A comparative study of some minerals occnrring in the potassium-rich alkaline rocks of the Leucitite Hills, Wyoming, the Vico Volcano, Western Italy, and the Toto-Ankole Region, Uganda. N Jahrb Mineral Abh 137 113-134... 

The X-ray diffiaction (XRD) spectrum (Figure 4) for die synthetic Mn oxide has no prominent peak. However, die pattern matched bimessite in the database with a characterisdc small peak at 7.3 A. Anmng all the Mn oxide minerals, the bimessite family has layer spacings of approximately 7 A (5, 14) with Na, Ca, or K as die interlayer elements. Because the mineral is formed in a potassium rich environment, the mineral formed in our study is semi-amorphous potassium-rich bimessite. The basic structural unit for bimessite is a sheet of MnO octahedra (Crystal structure C in Figure 2). The interlayer cations and water molecules generally are known to occupy different positions inside the mineral. 

Table 14.29. Potassium-rich industrial minerals and synthetic chemicals used in fertilizers (ordered by decreasing potassium content)...

Eremenko G, Khrenov A (1982) Luminescence of baddeleyite. Miner Mag 4 93-95 (in Russian) Erfurt G (2003) Infrared luminescence of Pb centres in potassium-rich feldspars. Phys Stat Sol... 

Potassium and sodium share the position of the seventh most abundant element on earth. Common minerals such as alums, feldspars, and micas are rich in potassium. Potassium metal, a powerful reducing agent, does not exist in nature. 

Minerals and Ash. The water-soluble extract solids which iafuse from tea leaves contain 10—15% ash. The tea plant has been found to be rich in potassium (24) and contains significant quantities of calcium, magnesium (25), and aluminum (26). Tea beverages are also a significant source of fluoride (27), owing in part to the uptake of aluminum fluoride from soils (28,29). 

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