Copper minerals

During preparations for blasting the sulfide mineral copper pyrites, ammonium nitrate-based blasting cartridges exploded prematurely in the blast holes. This was attributed to exothermic interaction of acid ground-water with the sulfide-oxidant combination. 

With regard to minerals, copper is the index mineral when present in the formulation and in its absence zinc becomes the index mineral. If neither copper nor zinc is present, the index mineral is iron and in the absence of all these minerals, the element labeled as present in the lowest amount is the index mineral. While this approach may not be ideal, it does represent a significant improvement over the weight variation requirement that guided the industry through the 1990s. 

Elemental composition Cu 33.36%, I 66.64%. Either compound or mineral copper(I) iodide is identified by x-ray diffraction or fluorescence method. Copper may be analyzed in nitric acid extract of copper(I) iodide by various instrumental techniques (see Copper). 

The formula varies several salts with variable compositions of CuS04 and Cu(OH)2 or CuO are known. Some of them occur in nature as minerals Copper hydroxide sulfate or cupric subsulfate is found in nature as the mineral dolerophane formula CuS04 CuO... 

Liquid Dosage Forms. In dry form and at very low moisture content, L-ascorbic acid is very stable, but in solution exposed to air or oxygen it is subject to oxidation accelerated by dissolved trace minerals (copper and iron) and light exposure, l-Ascorbic acid is a reducing agent and is subject to oxidative decomposition in solution. This proceeds first to dehydroascorbic acid, which has full vitamin C activity, but continues to diketogulonic acid and various other breakdown products. The degradation reactions are complex and vary with aerobic or anaerobic... 

Tamarind seeds appear to be a good source of different mineral elements (4, 6, 9, 14), such as calcium, phosphoms, magnesium and potassium (5, 20) (Table X). Calcium content of tamarind seeds is quite high compared to that of some of the cultivated pulse crops (Kuzayli et al, 1966, cited in 4)). Of all the minerals studied in 4), K is the element in highest concentration, with the values for the trace mineral copper also relatively high (6). 

I feel it is very important to know the difference between the way the body responds to table salt and the way it responds to sodium in the foods we eat. Foods usually deliver vitamins and minerals to us in a mixture of mutally enhancing nutrients, never just one nutrient. In spinach, for example, sodium is accompanied by vitamins A, B-complex, C, and K, and minerals copper, calcium, iron, magnesium, phosphate, zinc, and... 

The mean concentration of copper in the earth s crust is about 50 /xg kg The higher copper concentrations are found in ferromanganese minerals. Copper is concentrated in the mineral fraction of the soil soils containing manganese oxides or those rich in organic substances also contain higher contents of copper. The copper content in soils is very variable. The largest... 

Among sheep with dietary insufficiencies, the minerals copper and zinc, when supplemented to the diet, have been shown to be important to wool fiber growth. Their effectiveness is attributed to the important roles these minerals play in sulfur amino acid metabolism copper serves to catalyze the oxidation of cysteine to cystine during fiber synthesis [109]. Zinc is required for cell division to occur, and it also appears to play a role in protein metabolism [110]. 

Copernicus, Nicholas (1473-1543) Polish astronomer who claimed the sun to be the center of the imiverse. copolymers Polymers that are composed of two monomers and result in chains composed of alternating units rather than a single repeating imiL copper As a nutritional mineral, copper is needed to form Hb and collagen. 

The dietary factors studied in detail have been amount of calories ( overweight or not), refining of foods, fruits and vegetables, fats, proteins, carbohydrates, cholesterol, vitamins A, D (cod liver oil), E, and B (especially niacin and pyridoxine), choline, cystine, methionine, and minerals (copper, magnesium, sodium, potassium). In the following discussions the disease for which the best documentation was found is usually described first. 

Banik (1989) observed this mineral on a sixteenth century illuminated manuscript, in association with pseudomalachite q.v). Magaloni (1996) has also identified chalconatronite on a wall painting at two Mayan sites. The synthetic analogue of this mineral - copper sodium carbonate, chalconatronite type (. v.) -was found by Scott (2002) to he formed by a Chinese recipe cited by Needham (1974). 

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