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Quadridavyne |
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Bonaccorsi E, Merlino S, Orlandi P, Pasero M, Vezzalini G |
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European Journal of Mineralogy 6 (1994) 481-487 |
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Quadridavyne, [(Na,K)6Cl2][Ca2Cl2][Si6Al6O24], a new feldspathoid |
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mineral from Vesuvius area |
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Note: Cl1 y-coordinate altered |
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Locality: Vesuvius, Italy |
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_database_code_amcsd 0006545 |
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25.771 25.771 5.371 90 90 120 P6_3/m |
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atom x y z occ |
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Naint(ab) .052 .106 1/4 .28 |
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Kint(ab) .052 .106 1/4 .10 |
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Namid(ab) .068 .139 1/4 .24 |
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Kmid(ab) .068 .139 1/4 .12 |
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Naext(ab) .091 .182 1/4 .20 |
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Kext(ab) .091 .182 1/4 .06 |
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Naint(c1) .391 .439 1/4 |
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Naint(c2) .587 .414 1/4 |
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Kext(c) .591 .683 1/4 |
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Si1 .1615 .2049 3/4 |
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Si2 .2921 .4597 3/4 |
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Si3 .041 .335 3/4 |
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Si4 .2082 .5408 1/4 |
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Al1 .0345 .2082 3/4 |
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Al2 .299 .333 3/4 |
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Al3 .168 .464 3/4 |
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Al4 .209 .6692 1/4 |
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O1 .105 .215 3/4 |
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O2 .060 .2844 3/4 |
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O3 .172 .002 .02 |
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O5 .294 .399 3/4 |
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O6 .211 .273 3/4 |
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O7 .667 -.005 .021 |
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O8 .669 .506 .508 |
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O9 .106 .398 3/4 |
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O10 .223 .445 3/4 |
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O11 .174 .511 .993 |
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O13 .220 .608 1/4 |
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O14 .276 .553 1/4 |
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Ca1 2/3 1/3 3/4 |
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Cl1 2/3 1/3 1/4 |
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Ca2 .334 .169 1/4 |
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Cl2 .3130 .1561 3/4 |
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Cl(a) -.018 .024 1/4 1/6 |
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Cl(b) .029 .047 1/4 1/6 |
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Cl(c) .529 .547 1/4 |
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