Elements Of Mineralogy Research Articles

Radiometric and petrographic characterization of El-Yatima granite: Evaluating radiological risks and mineralogical features

The current investigation aims to assess the potential of El-Yatima granitic pluton as a decorative stone by examining its natural radioactivity and mineralogical elements. Specifically, the study aims to determine the concentrations of radionuclides 40K, 232Th, and 226Ra, perform petrographic analyses, and evaluate the associated radiological risks to determine the safety and usability of the granite in construction and decoration, as well as to assess the potential of these granitic rocks as a safe and effective decorative stone for various applications. It has a 12 km2 surface area of 812 m above sea level. It is situated in the Eastern Central Desert. Its hypidiomorphic texture, medium-to-coarse grain size, and predominant composition of K-feldspars, quartz, and plagioclase are observed, along with minute amounts of muscovite and biotite. By employing NaI (Tl) gamma-ray spectroscopy, the natural radionuclide concentrations of 40K, 232Th, and 226Ra in El-Yatima granitic rocks were ascertained. Additionally, radiological concerns were identified for the materials that were examined. The average concentrations of radionuclides 40K, 232Th, and 226Ra are 178 Bqkg−1, 44 Bqkg−1, and 41 Bqkg−1, respectively. The following are the computed values: 117 Bqkg−1, 0.43, 0.32, 53 nGyh−1, average radium equivalent (Raeq), hazard indices (Hin and Hex) and dose rate (D), respectively. When compared to levels typically indicated, it was discovered that its values were within the worldwide standard. The study's findings could be a starting point for radiometric data for upcoming surveillance and epidemiological research.

Sedimentological characteristics and geochemistry of lake waters of the Rio Grande basin, west of Bahia State (Brazil)

ABSTRACTThe lacustrine system of the Rio Grande basin is placed where it gathers singularities from both geological and climatic points of view. In order to understand the origin and dynamics of this system, a faciological description of the deposits from two lakes considers both textural and mineralogical elements via XRD analyses. This was followed by a chemical analysis of a dozen lakes' water, in order to standardize the evolution of the lowlands which form the lakes. The hydrochemical data revealed two trends: one group of lakes presented sodium and base, and the other group calcium and acid. Both these groups also presented some differences in their sediment characteristics, registering round pebbles, a higher percentage of sand and presence of mica in one of the lakes, contrasting with the muddy texture with predominance of quartz and kaolinite in the other lake. Such results allowed the proposition of two evolutionary models for the lakes of the São Francisco Lowlands, which share the same climate; evidence that the other landscape elements affect the system's dynamics. One of the models is represented by lakes that evolved from little permeable sedimentary rocks. These rocks, however, are more fractured, favouring the lakes area expansion and more water permanence with recent links to the river network. On the other proposed model, the lakes evolved from permeable but less fractured carbonic rocks with rapid vertical water infiltration and less water permanence, which reflects more atmospheric than lithological influence in their geochemical characteristics. This study provides important information for the comprehension of this landscape evolution.

C. D. Gribble Rutley's Elements of Mineralogy, 27th Edition. London (Unwin Hyman), 1988. xiv + 482 pp. Price £12.95 (paper); £38.00 (hardback).

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Rutley's Elements of Mineralogy. H. H. Read

Previous articleNext article No AccessReviewsRutley's Elements of Mineralogy. H. H. Read Paul Brian MoorePaul Brian Moore Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The Journal of Geology Volume 81, Number 4Jul., 1973 Article DOIhttps://doi.org/10.1086/627900 Views: 1Total views on this site Citations: 1Citations are reported from Crossref Copyright 1973 The University of ChicagoPDF download Crossref reports the following articles citing this article:B. K. Dhindaw, J. D. Verhoeven Inverse Chill and Nodular Graphite Formation in Synthetic Cast Irons Melted and Cast under Vacuum, Transactions of the Japan Institute of Metals 24, no.22 (Jan 1983): 71–80.https://doi.org/10.2320/matertrans1960.24.71

(B.) Mason and (L. G.) Berry. Elements of Mineralogy. San Francisco and London (Freeman), 1968. x+550 pp., 233 figs. Price 80s.

(B.) Mason and (L. G.) Berry. Elements of Mineralogy. San Francisco and London (Freeman), 1968. x+550 pp., 233 figs. Price 80s.

Rutley's Elements of Mineralogy. H. H. Read

<i>Rutley's Elements of Mineralogy</i>. H. H. Read

Rutley's Elements of Mineralogy. H. H. Read

<i>Rutley's Elements of Mineralogy</i>. H. H. Read

Rutley's Elements of Mineralogy. By H. H. Read 23rd edition, revised and enlarged; pp. viii + 490, with 128 text-figures. London: Thomas Murby and Co., 1936. Price 8s.

Rutley's Elements of Mineralogy. By H. H. Read 23rd edition, revised and enlarged; pp. viii + 490, with 128 text-figures. London: Thomas Murby and Co., 1936. Price 8<i>s</i>.

Elements of Mineralogy. By F. Rutley, revised by H. H. Read. 22nd edition, pp. xxii + 394, with 84 figs. London: Thomas Murby and Co., 1929. Price 6s.

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IV.—Elements of Mineralogy. By Frank Rutley: revised by H. H. Read; introduction by G. T. Holloway. Murby &amp; Co.19th ed. pp. 394. 1916. Price 3s. 6d. net.

IV.—Elements of Mineralogy. By Frank Rutley: revised by H. H. Read; introduction by G. T. Holloway. Murby &amp; Co.19th ed. pp. 394. 1916. Price 3<i>s</i>. 6<i>d</i>. net.

Elements of Mineralogy, Crystallography and Blowpipe Analysis from a Practical Standpoint . By Alfred J. Moses, E.M., Ph.D., Professor of Mineralogy, Columbia University, and Charles L. Parsons, B.S., Professor of Chemistry, New Hampshire College. Fourth edition, with 448 pages of text and 583 figures. Cloth, 6 × 9½. New York, D. Van Nostrand Company. 1909. $2.50 net.

<i>Elements of Mineralogy, Crystallography and Blowpipe Analysis from a Practical Standpoint</i> . By Alfred J. Moses, E.M., Ph.D., Professor of Mineralogy, Columbia University, and Charles L. Parsons, B.S., Professor of Chemistry, New Hampshire College. Fourth edition, with 448 pages of text and 583 figures. Cloth, 6 × 9½. New York, D. Van Nostrand Company. 1909. $2.50 net.

Elements of Mineralogy, Crystallography and Blowpipe Analysis from a Practical Standpoint

Elements of Mineralogy, Crystallography and Blowpipe Analysis from a Practical Standpoint

Elements of Mineralogy, Crystallography and Blowpipe Analysis,

Elements of Mineralogy, Crystallography and Blowpipe Analysis,

I.—Elements of Mineralogy. By Frank Rutley, F.G.S. Fourteenth edition, revised and corrected. Demy 8vo; pp. 251, viii. (London: Thomas Murby &amp; Co.)

I.—Elements of Mineralogy. By Frank Rutley, F.G.S. Fourteenth edition, revised and corrected. Demy 8vo; pp. 251, viii. (London: Thomas Murby &amp; Co.)

Elements of Mineralogy, Crystallography and Blowpipe Analysis from a practical standpoint. By A. J. Moses, Professor of Mineralogy, Columbia University, and C. L. Parsons, Professor of General and Analytical Chemistry, New Hampshire College. New enlarged Edition. Pp. vii+414. 664 Figures. (New York: D. Vall Nostrand Company, 1900. Price $2.00 net.) - A Text-book of Important Minerals and Rocks, with Tables

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Elements of Mineralogy, Crystallography and Blowpipe Analysis, from a Practical Standpoint. Alfred J. Moses , Charles L. Parsons

<i>Elements of Mineralogy, Crystallography and Blowpipe Analysis, from a Practical Standpoint</i>. Alfred J. Moses , Charles L. Parsons

The British Association: Section E—Geography

The British Association: Section E—Geography

Elements of mineralogy; containing a general introduction to the science, with descriptions of the species

Elements of mineralogy; containing a general introduction to the science, with descriptions of the species