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Trikalsilite |
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Bonaccorsi E, Merlino S, Pasero M |
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Neues Jahrbuch fur Mineralogie, Monatshefte 1988 (1988) 559-567 |
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Trikalsilite: its structural relationships with nepheline and tetraskalsilite |
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Locality: Near Mt. Nyiragongo, Virunga volcanic field, North Kivu, Zaire |
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15.339 15.339 8.501 90 90 120 P6_3 |
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atom x y z occ Biso |
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NaM2 .3689 .0133 .75 .7 1.9 |
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KM2 .3689 .0133 .75 .3 1.9 |
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KM1 0 0 .7553 1.4 |
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KM3 .2922 .3195 .7474 .7 1.5 |
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NaM3 .2922 .3195 .7474 .3 1.5 |
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KM4 1/3 2/3 .7371 2.6 |
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KM5 2/3 1/3 .7601 .9 |
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Al1 .4453 .2351 .5537 .5 |
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Al2 .0544 .2147 .5638 1.0 |
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Al3 .4147 .5354 .5614 .7 |
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Si1 .1947 .4374 .4373 .5 |
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Si2 .2196 .1593 .4361 1.1 |
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Si3 .5663 .4572 .4425 .7 |
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O1 .183 .432 .253 5.3 |
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O2 .201 .184 .255 1.7 |
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O3 .560 .453 .250 7.5 |
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O4 .197 .542 .472 1.7 |
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O5 .546 .348 .494 1.1 |
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O6 .108 .343 .516 1.7 |
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O7 .335 .227 .479 2.6 |
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O8 .154 .190 .556 .7 |
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O9 .173 .037 .445 1.2 |
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O10 .305 .448 .458 1.3 |
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O11 .458 .140 .479 1.3 |
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O12 .493 .487 .527 3.3 |
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