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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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CC=56918 Help
TitleClinopyroxene from Lipari: Comparison with analogues from other Aeolian Islands, Italy.
AuthorsPasqual, D.;Molin, G.;Zanazzi, P.F.;Crisci, G.M.
ReferenceIC&volume=36&fpage=97&details=yes target=icsd_help>Canadian Mineralogist (1998) 36, 97-105
Link XRef SCOPUS Google
CompoundAl0.07 Ca0.9 Cr0.01 Fe0.13 Mg0.92 Na0.01 O6 Si1.96 - [Augite] Magnesium aluminium iron iron(III) chromium calcium sodium catena-alumosilicate * [ABC2X6] [mS40] [f4 e2] []
Cell9.740(5), 8.911(4), 5.253(2), 90., 106.13(4), 90.
C12/C1 (15) V=437.98
RemarksR=0.020600 : M =Augite : P =41-1483 :
Some Fe may be on M2': 0 .2272 .25, sample L2
Closure temperature: 1343 K, atomic parameters from author
Mean M-O: 2.077, 2.491 (CN 8), T-O: 1.636

Atom (site) Oxid. x, y, z, B, Occupancy
Mg1(4e)2
Fe1(4e)2
Al1(4e)3
Cr1(4e)3
Ca1(4e)2
Na1(4e)1
Mg2(4e)2
Fe2(4e)2
Si1(8f)4
Al2(8f)3
O1(8f)-2
O2(8f)-2
O3(8f)-2
00.900.250.000.86
00.900.250.000.1
00.900.250.000.03
00.900.250.000.01
00.290.250.000.9
00.290.250.000.01
00.290.250.000.06
00.290.250.000.03
0.280.090.230.000.98
0.280.090.230.000.02
0.110.080.140.001
0.360.240.320.001
0.350.01-.000.001

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