On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures

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ridefinizioni, classificazioni, ecc.
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Marco E. Ciriotti
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On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures

Messaggio da Marco E. Ciriotti » ven 27 gen, 2023 10:24

Prossima pubblicazione.

Referenza:
▪ Hawthorne, F.C. (2023): On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures. Mineralogical Magazine, 87, (in press).

Abstract:
The criteria for the definition of a new mineral species currently used by the Commission on New Minerals Nomenclature and Classification (CNMNC) of the International Mineralogical Association are critically examined. In particular, the rule of the dominant constituent can violate the laws of conservation of electric charge. A series of additional rules: (1) valency-imposed double site-occupancy, (2) the dominant-valency rule, and (3) the site-total-charge approach, have been developed in an attempt to correct this error. However, none of these rules can overcome the fundamental flaw introduced by the rule of the dominant constituent, and the chemical formulae resulting from application of these rules can violate the requirements of an end member, particularly that of electroneutrality. As a result, the IMA-CNMNC rules cannot derive end-member formulae for some groups of minerals, giving rise to many ad hoc decisions in defining distinct mineral species.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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Marco E. Ciriotti
Messaggi: 31675
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
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Re: On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures

Messaggio da Marco E. Ciriotti » mer 24 mag, 2023 11:27

Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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Marco E. Ciriotti
Messaggi: 31675
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures

Messaggio da Marco E. Ciriotti » gio 06 lug, 2023 10:51

Pubblicazione effettuata.

Referenza:
▪ Hawthorne, F.C. (2023): On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures. Mineralogical Magazine, 87, 494-504.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

Avatar utente
Marco E. Ciriotti
Messaggi: 31675
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures

Messaggio da Marco E. Ciriotti » gio 06 lug, 2023 10:51

Pubblicazione effettuata.

Referenza:
▪ Hawthorne, F.C. (2023): On the definition of distinct mineral species: A critique of current IMA-CNMNC procedures. Mineralogical Magazine, 87, 494-504.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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