Polytypism of cronstedtite from two localities in Mexico

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F24%3A10136758" target="_blank" >RIV/00023272:_____/24:10136758 - isvavai.cz</a>

Result on the web

<a href="http://www.bullmineral.cz/paper/download/363/fulltext" target="_blank" >http://www.bullmineral.cz/paper/download/363/fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.46861/bmp.32.177" target="_blank" >10.46861/bmp.32.177</a>

Result language

angličtina

Original language name

Polytypism of cronstedtite from two localities in Mexico

Original language description

Cronstedtite from two Mexican localities: 1) San Antonio mine, 9th level, East camp, Santa Eulalia mining district, Aquiles Serdán Municipality, Chihuahua, Mexico (MSA in the following), 2) Francisco I. Madero Mine, Noria de los Gringos, Zacatecas, Mexico (FIM in the following), were studied by single-crystal X-ray diffraction using the four-circle diffractometer with area detector. The reciprocal space (RS) sections were generated by the diffractometer software in order to determine OD subfamilies (Bailey&apos;s groups) A, B, C, D, and particular polytypes. In the samples from MSA the polytype 3T (Subfamily A) is the most frequent. Some crystals are affected by twinning by reticular merohedry with the 180o rotation as twinning operation (obverse-reverse twinning). The 2H2 polytype (subfamily D) occurs rarely. In the FIM sample, the 2H1 + 2H2 allotwins (subfamily D) are most frequent. In one sample, the rare 6T1 polytype (subfamily D) was detected. The 3T polytype is rare. The electron probe microanalysis showed broad similarites in composition of the studied cronstedtites, characterized by common lack of any substitutes except of low S (up to 0.02 apfu; at both sites), and Cl (up to 0.01 apfu, at FIM only).

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Bulletin Mineralogie Petrologie

ISSN

2570-7337

e-ISSN

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Volume of the periodical

32

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

177-186

UT code for WoS article

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EID of the result in the Scopus database

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