Results 241 to 250 of about 410,633 (280)
Some of the next articles are maybe not open access.
ACCESSORY MINERALS AS AN INDICATOR OF THE EVOLUTION OF THE LITHOSPHERE
International Geology Review, 1987(1987). ACCESSORY MINERALS AS AN INDICATOR OF THE EVOLUTION OF THE LITHOSPHERE. International Geology Review: Vol. 29, No. 8, pp. 899-911.
openaire +1 more source
Non-Crystalline and Accessory Minerals
1979Publisher Summary In the past the knowledge of non-crystalline and accessory minerals has not developed to the same extent as that of clay silicates. The reasons are the difficulty of identification and further description of non-crystalline minerals and for accessory minerals, their low concentration and their frequent removal before clay mineral ...
openaire +1 more source
The paragenesis of accessory minerals in igneous rocks [discussion]
Economic Geology, 1958Presents arguments against the thesis that accessory minerals in igneous rocks (particularly apatite, zircon, and sphene) are products of late crystallization, noting in conclusion that the preferential distribution of primary (early) accessory minerals in early main constituents is a criterion for magmatic crystallization.
openaire +1 more source
The informational significance of studies of diamond accessory minerals
Russian Journal of General Chemistry, 2011The history of the diamond field discoveries in Russia was briefly overviewed, and the leading role of the mineralogical prospecting methods was emphasized. Recent advances in studies of diamond accessory minerals were discussed, with the focus placed on the most important among them, the discovery of syngenetic metal films on the diamond surface ...
openaire +1 more source
Identification and significance of accessory minerals from a bituminous coal
Fuel, 1978Abstract A scanning electron microscope (SEM) has been used to study the in situ accessory minerals in polished blocks and pellets of petrographically analysed samples of the Waynesburg coal (hvb). Individual grains from the low-temperature ash (LTA) of the same coal were also studied.
Robert B. Finkelman, Ronald W. Stanton
openaire +1 more source
Phosphate solubility tests—interference of some accessory minerals
Journal of the Science of Food and Agriculture, 1979AbstractSolubilities of apatites isolated from random samples of Israeli phosphates were determined in citric acid, formic acid and neutral ammonium citrate. Minerals normally associated with the apatites in rock phosphates were then added and the solubility tests repeated.
Shimshon Axelrod, Dahlia Greidinger
openaire +1 more source
DETERMINING TYPES OF GRANITIC ROCKS FROM THEIR ACCESSORY MINERALS
International Geology Review, 1963This article deals with the results of a study of accessory minerals from an igneous complex in the southern Urals. Two types of granitic rocks have been differentiated on the basis of a study of their accessory minerals: predominantly apatite and predominantly zircon types as well as intermediate apatite-zircon and monazite-zircon types.
openaire +1 more source