By R. H. Mitchell, M. I. Novgorodova, E. I. Semenov (auth.), Prof. Dr. A. S. Marfunin (eds.)

ISBN-10: 3642785239

ISBN-13: 9783642785238

ISBN-10: 3642785255

ISBN-13: 9783642785252

All present introductory studies of mineralogy are written accord­ ing to a similar set of rules, also known as the "Dana method of Mineralogy". Even sleek complex handbooks, that are cer­ tainly worthy, contain easy information on minerals and are primarily descriptive. while simple info at the chemistry, constitution, optical and actual homes, exceptional positive aspects and para­ genesis of 200-400 minerals is gifted, then there's virtually no additional house to be had to incorporate new principles and ideas according to fresh mineral experiences. a potential approach to this quandary will be to provide a booklet starting the place introductory textbooks finish for these already famil­ iar with the straightforward recommendations. any such quantity will be adapted to experts in all fields of technological know-how and undefined, drawn to the newest leads to mineralogy. This process might be known as complex Mineralogy. right here, an try out has been made to survey the present probabilities and goals in mineral subject investigations, together with the most features of the entire equipment, crucial difficulties and subject matters of mineral­ ogy, and similar experiences. the person volumes are composed of brief, condensed chap­ ters. every one bankruptcy provides in an entire, albeit condensed, shape particular difficulties, tools, theories, and instructions of investigations, and estimates their significance and strategic place in technology and industry.

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Additional info for Advanced Mineralogy: Volume 1 Composition, Structure, and Properties of Mineral Matter: Concepts, Results, and Problems

Example text

S. Povarennykh listed 1692 minerals). Now, about 25 years later, this number has increased twofold. The causes of the limited total number of minerals in comparison with the number of chemical compounds included the following aspects. (1) The composition of the Earth's crust (and mantle) is dominated by eight major elements (O,Si,AI,Fe,Mg,Ca,Na,K) and four minor elements (Ti,Mn,P,H), while all other elements are present only in trace quantities. This element distribution depends, in turn, on the chemical composition of the protoplanetary nebula.

31 Mn O. 00 16 Chapter 1. The Chemical Nature of Minerals Table 6. oo Table 7. Clinohumite analysis. (Deer et al. % of oxides Mol. prop. of oxides Atom. props. of oxygen from each mol. No. of ions in formula No. , col. 593 912 . 26 =! , 18-1- (OH,F,CI). ] The result in Table 7 is: l: 0 props. 3961 previously used, and almost identical cation numbers will result. 1 Structural Formulae 17 For an amphibole, the formula involving (Si,AI)s022(OH,F)2 would be derived normally on the basis of 24(0, OH, F) but if(OH,F) is uncertain, the basis would be 23(0).

Mineralogists must also be concerned about using data that represent a closed data set (Aitchison 1986, 1990). Because mineralogical data and analyses normally sum to one, or 100%, or can be represented in a ternary, or tetrahedral diagram, they are constrained in some manner. Care thus must be exercised in a statistical analysis because constraints will yield false correlations and covariances for the variables in the analysis. Adverse effects due to closed number systems will diminish as the number of variables increases (m becomes larger).

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Advanced Mineralogy: Volume 1 Composition, Structure, and Properties of Mineral Matter: Concepts, Results, and Problems by R. H. Mitchell, M. I. Novgorodova, E. I. Semenov (auth.), Prof. Dr. A. S. Marfunin (eds.)


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