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(1) The iron minerals hematite and magnetite have high densities be-cause of the high atomic weight of iron.

(2) Reniform, mammillated, botryoidal, dendrite, hematite.

(3) These are sold as a set pressed hematite metal magnets.

(4) Low - grade hematite, acid, acid and sodium silicate were used to prepare poly - silicic - ferric chloride sulfate ( PSFCS ).

(5) Oolitic hematite is considered as one of the most refractory ore type.

(6) Mineral process of hematite in the early time often adopted gravity separation, and it mainly included jig, centrifugal separator, spiral chute, spiral concentrator, shaking table and so on.

(7) It'sense d a min eral called hematite that offen forms under wet conditions.

(8) The interaction between the ternary system of kaolin, hematite and sodium oleate was studied in some detail using diffused reflection differential infrared spectroscopy.

(9) Factors influencing the electrical coagulation process of hematite and quartz are described.

(10) When preparing the fluxed magnesium hematite pellets with the fuels, the intensity of roasted pellets was greatly improved with the coke ratio of less than 1.5% and pellet alkalinity at 0.9.

(11) Pitchblende is the only primary uranium mineral, which is associated with quartz, fluorite, hematite and pyrite.

(12) This results have been verified by the tests of same procedure for Sijiayin hematite ore.

(13) Black calfskin leather bracelet with Jet , Jet Mat and Jet Hematite Crystal Mesh ; faceted ruthenium - plated buckle.

(14) The main mineral is askanite with an average content of 72. 85 percent, followed by quartz, christobalite and little rock salt and hematite.

(15) The work has researched in adsorption and desorption of iodine and technetium on brass ore, lead glance, rare-earth hematite, antimony glance, molybdenite and iron pyrites and so on.

(16) The Lujiang meteorite, a chondrite whose petrochemical type is LL6, contains the following opaque minerals: kamacite, taenite, disordered taenite, troilite, chromite, hematite, ilmenite.

(17) Based on a brief analysis of the genesis of hematite, the authors hold that hematite in red granite was mostly produced under the condition of high oxygen fugacity.

(18) The analysis of the iron bearing mineral compositions indicates that the major iron bearing minerals in the rocks are magnetite, maghemite, hematite, pyrite and siderite.

(19) The study shows that from the bottom to the top of laterite weathering crust profile, illite and kaolin decrease, gibbsite, goethite and hematite increase.

(20) The domestic ores are fine magnetite concentrate, the imported ores mainly are hematite sinter fines.

(21) Our study demonstrated that formation of gold deposits in greenstone belt and gold-bearing dark rock series, and hematite containing big gold grain gold might be controlled by mineral magnetism.

(22) Main metallic minerals in the manganese-silver concentrate were psilomelane, pyrolusite , pyrite, limonite, and a few arsenopyrite, hematite and sphalerite.

(23) And as Squyres had wondered, shavings of the ratted rock in the crater were indeed brick-red, typical of hematite when it is pulverized.

(24) Iron ores of greatest economic interest contain magnetite and hematite.

(25) For two Yuan samples the amount of magnetite in pigments is nearly similar to the amount of hematite, the decorative pattern of which is of brownish red color.

(26) Besides that resource, the company has the potential for 800 million metric tons of hematite iron ore. Sentencedict.com

(27) But the mineral phase of part of Yuan dynasty's overglaze color is mainly hematite, the decorative pattern of which is of deep red color.

(28) At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and accompanied by magnetite and hematite.

(29) Ruthenium - plated cuff with Jet, Jet Mat and Jet Hematite Crystal Mesh and black, embossed calfskin leather.

(30) Black calfskin leather bracelet with Jet , Jet Mat and Jet Hematite Crystal faceted ruthenium - plated buckle.