|
# |
Extinction Symbol |
Space Groups |
|
Monoclinic |
||
|
1 |
P – 1 1 |
P211(3), Pm11(6), P2/m11(10) |
|
2 |
P 21 1 1 |
P2111(4), P21/m11(11) |
|
3 |
P b 1 1 |
Pb11(7), P2/b11(13) |
|
4 |
P 21/b 1 1 |
P21/b11(14) |
|
5 |
P c 1 1 |
Pc11(7), P2/c11(13) |
|
6 |
P 21/c 1 1 |
P21/c11(14) |
|
7 |
P n 1 1 |
Pn11(7), P2/n11(13) |
|
8 |
P 21/n 1 1 |
P21/n11(14) |
|
9 |
C – 1 1 |
C211(5), Cm11(8), C2/m11(12) |
|
10 |
C n 1 1 |
Cn11(9), C2/n11(15) |
|
11 |
B – 1 1 |
B211(5), Bm11(8), B2/m11(12) |
|
12 |
B b 1 1 |
Bb11(9), B2/b11(15) |
|
13 |
I – 1 1 |
I211(5), Im11(8), I2/m11(12) |
|
14 |
I c 1 1 |
Ic11(9), I2/c11(15) |
|
15 |
P 1 – 1 |
P2(3), Pm(6), P2/m(10) |
|
16 |
P 1 21 1 |
P21(4), P21/m(11) |
|
17 |
P 1 a 1 |
Pa(7), P2/a(13) |
|
18 |
P 1 21/a 1 |
P21/a(14) |
|
19 |
P 1 c 1 |
Pc(7), P2/c(13) |
|
20 |
P 1 21/c 1 |
P21/c(14) |
|
21 |
P 1 n 1 |
Pn(7), P2/n(13) |
|
22 |
P 1 21/n 1 |
P21/n(14) |
|
23 |
C 1 – 1 |
C2(5), Cm(8), C2/m(12) |
|
24 |
C 1 c 1 |
Cc(9), C2/c(15) |
|
25 |
A 1 – 1 |
A2(5), Am(8), A2/m(12) |
|
26 |
A 1 n 1 |
An(9), A2/n(15) |
|
27 |
I 1 – 1 |
I2(5), Im(8), I2/m(12) |
|
28 |
I 1 a 1 |
Ia(9), I2/a(15) |
|
29 |
P 1 1 – |
P112(3), P11m(6), P112/m(10) |
|
30 |
P 1 1 21 |
P1121(4), P1121/m(11) |
|
31 |
P 1 1 a |
P11a(7), P112/a(13) |
|
32 |
P 1 1 21/a |
P1121/a(14) |
|
33 |
P 1 1 b |
P11b(7), P112/b(13) |
|
34 |
P 1 1 21/b |
P1121/b(14) |
|
35 |
P 1 1 n |
P11n(7), P112/n(13) |
|
36 |
P 1 1 21/n |
P1121/n(14) |
|
37 |
B 1 1 – |
B112(5), B11m(8), B112/m(12) |
|
38 |
B 1 1 n |
B11n(9), B112/n(15) |
|
39 |
A 1 1 – |
A112(5), A11m(8), A112/m(12) |
|
40 |
A 1 1 a |
A11a(9), A112/a(15) |
|
41 |
I 1 1 – |
I112(5), I11m(8), I112/m(12) |
|
42 |
I 1 1 b |
I11b(9), I112/b(15) |
|
Orthorhombic |
||
|
43 |
P – – – |
P222(16), Pmm2(25), Pmmm(47), Pm2m(25), P2mm(25) |
|
44 |
P – – 21 |
P2221(17) |
|
45 |
P – 21 – |
P2212(17) |
|
46 |
P – 21 21 |
P22121(18) |
|
47 |
P 21 – – |
P2122(17) |
|
48 |
P 21 – 21 |
P21221(18) |
|
49 |
P 21 21 – |
P21212(18) |
|
50 |
P 21 21 21 |
P212121(19) |
|
51 |
P – – a |
Pm2a(28), P21ma(26), Pmma(51) |
|
52 |
P – – b |
Pm21b(26), P2mb(28), Pmmb(51) |
|
53 |
P – – n |
Pm21n(31), P21mn(31), Pmmn(59) |
|
54 |
P – a – |
Pma2(28), Pmam(51), P21am(26) |
|
55 |
P – a a |
P2aa(27), Pmaa(49) |
|
56 |
P – a b |
P21ab(29), Pmab(57) |
|
57 |
P – a n |
P2an(30), Pman(53) |
|
58 |
P – c – |
Pmc21(26), P2cm(28), Pmcm(51) |
|
59 |
P – c a |
P21ca(29), Pmca(57) |
|
60 |
P – c b |
P2cb(32), Pmcb(55) |
|
61 |
P – c n |
P21cn(33), Pmcn(62) |
|
62 |
P – n – |
Pmn21(31), P21nm(31), Pmnm(59) |
|
63 |
P – n a |
P2na(30), Pmna(53) |
|
64 |
P – n b |
P21nb(33), Pmnb(62) |
|
65 |
P – n n |
P2nn(34), Pmnn(58) |
|
66 |
P b – – |
Pbm2(28), Pb21m(26), Pbmm(51) |
|
67 |
P b – a |
Pb21a(29), Pbma(57) |
|
68 |
P b – b |
Pb2b(27), Pbmb(49) |
|
69 |
P b – n |
Pb2n(30), Pbmn(53) |
|
70 |
P b a – |
Pba2(32), Pbam(55) |
|
71 |
P b a a |
Pbaa(54) |
|
72 |
P b a b |
Pbab(54) |
|
73 |
P b a n |
Pban(50) |
|
74 |
P b c – |
Pbc21(29), Pbcm(57) |
|
75 |
P b c a |
Pbca(61) |
|
76 |
P b c b |
Pbcb(54) |
|
77 |
P b c n |
Pbcn(60) |
|
78 |
P b n – |
Pbn21(33), Pbnm(62) |
|
79 |
P b n a |
Pbna(60) |
|
80 |
P b n b |
Pbnb(56) |
|
81 |
P b n n |
Pbnn(52) |
|
82 |
P c – – |
Pcm21(26), Pc2m(28), Pcmm(51) |
|
83 |
P c – a |
Pc2a(32), Pcma(55) |
|
84 |
P c – b |
Pc21b(29), Pcmb(57) |
|
85 |
P c – n |
Pc21n(33), Pcmn(62) |
|
86 |
P c a – |
Pca21(29), Pcam(57) |
|
87 |
P c a a |
Pcaa(54) |
|
88 |
P c a b |
Pcab(61) |
|
89 |
P c a n |
Pcan(60) |
|
90 |
P c c – |
Pcc2(27), Pccm(49) |
|
91 |
P c c a |
Pcca(54) |
|
92 |
P c c b |
Pccb(54) |
|
93 |
P c c n |
Pccn(56) |
|
94 |
P c n – |
Pcn2(30), Pcnm(53) |
|
95 |
P c n a |
Pcna(50) |
|
96 |
P c n b |
Pcnb(60) |
|
97 |
P c n n |
Pcnn(52) |
|
98 |
P n – – |
Pnm21(31), Pnmm(59), Pn21m(31) |
|
99 |
P n – a |
Pn21a(33), Pnma(62) |
|
100 |
P n – b |
Pn2b(30), Pnmb(53) |
|
101 |
P n – n |
Pn2n(34), Pnmn(58) |
|
102 |
P n a – |
Pna21(33), Pnam(62) |
|
103 |
P n a a |
Pnaa(56) |
|
104 |
P n a b |
Pnab(60) |
|
105 |
P n a n |
Pnan(52) |
|
106 |
P n c – |
Pnc2(30), Pncm(53) |
|
107 |
P n c a |
Pnca(60) |
|
108 |
P n c b |
Pncb(50) |
|
109 |
P n c n |
Pncn(52) |
|
110 |
P n n – |
Pnn2(34), Pnnm(58) |
|
111 |
P n n a |
Pnna(52) |
|
112 |
P n n b |
Pnnb(52) |
|
113 |
P n n n |
Pnnn(48) |
|
114 |
C – – – |
C222(21), Cmm2(35), Cmmm(65), Cm2m(38), C2mm(38) |
|
115 |
C – – 21 |
C2221(20) |
|
116 |
C – – (ab) |
Cm2a(39), Cmma(67), C2mb(39), Cmmb(67) |
|
117 |
C – c – |
Cmc21(36), Cmcm(63), C2cm(40) |
|
118 |
C – c (ab) |
C2cb(41), Cmca(64) |
|
119 |
C c – – |
Ccm21(36), Ccmm(63), Cc2m(40) |
|
120 |
C c – (ab) |
Cc2a(41), Ccmb(64) |
|
121 |
C c c – |
Ccc2(37), Cccm(66) |
|
122 |
C c c (ab) |
Ccca(68), Cccb(68) |
|
123 |
B – – – |
B222(21), Bmm2(38), Bmmm(65), Bm2m(35), B2mm(38) |
|
124 |
B – 21 – |
B2212(20) |
|
125 |
B – – b |
Bm21b(36), Bmmb(63), B2mb(40) |
|
126 |
B – (ac)- |
Bma2(39), Bmam(67), B2cm(39), Bmcm(67) |
|
127 |
B – (ac)b |
B2cb(41), Bmab(64) |
|
128 |
B b – – |
Bbm2(40), Bbmm(63), Bb21m(36) |
|
129 |
B b – b |
Bb2b(37), Bbmb(66) |
|
130 |
B b (ac)- |
Bba2(41), Bbcm(64) |
|
131 |
B b (ac)b |
Bbab(68), Bbcb(68) |
|
132 |
A – – – |
A222(21), Amm2(38), Ammm(65), Am2m(38), A2mm(35) |
|
133 |
A 21 – – |
A2122(20) |
|
134 |
A – – a |
Am2a(40), Amma(63), A21ma(36) |
|
135 |
A – a – |
Ama2(40), Amam(63), A21am(36) |
|
136 |
A – a a |
A2aa(37), Amaa(66) |
|
137 |
A(bc)- – |
Abm2(39), Abmm(67), Ac2m(39), Acmm(67) |
|
138 |
A(bc)- a |
Ac2a(41), Abma(64) |
|
139 |
A(bc)a – |
Aba2(41), Acam(64) |
|
140 |
A(bc)a a |
Abaa(68), Acaa(68) |
|
141 |
I – – – |
I222(23), Imm2(44), Immm(71), I212121(24), Im2m(44), I2mm(44) |
|
142 |
I – – (ab) |
Im2a(46), Imma(74), I2mb(46), Immb(74) |
|
143 |
I – (ac)- |
Ima2(46), Imam(74), I2cm(46), Imcm(74) |
|
144 |
I – c b |
I2cb(45), Imcb(72) |
|
145 |
I(bc)- – |
Ibm2(46), Ibmm(74), Ic2m(46), Icmm(74) |
|
146 |
I c – a |
Ic2a(45), Icma(72) |
|
147 |
I b a – |
Iba2(45), Ibam(72) |
|
148 |
I b c a |
Ibca(73) |
|
149 |
F – – – |
F222(22), Fmm2(42), Fmmm(69), Fm2m(42), F2mm(42) |
|
150 |
F – d d |
F2dd(43) |
|
151 |
F d – d |
Fd2d(43) |
|
152 |
F d d – |
Fdd2(43) |
|
153 |
F d d d |
Fddd(70) |
|
Tetragonal |
||
|
154 |
P – – – |
P4(75), P-4(81), P4/m(83), P422(89), P4mm(99), P-42m(111), P4/mmm(123), P-4m2(115) |
|
155 |
P – 21 – |
P4212(90), P-421m(113) |
|
156 |
P 42 – – |
P42(77), P42/m(84), P4222(93) |
|
157 |
P 42 21 – |
P42212(94) |
|
158 |
P 41 – – |
P41(76), P43(78), P4122(91), P4322(95) |
|
159 |
P 41 21 – |
P41212(92), P43212(96) |
|
160 |
P – – c |
P42mc(105), P-42c(112), P42/mmc(131) |
|
161 |
P – 21 c |
P-421c(114) |
|
162 |
P – b – |
P4bm(100), P-4b2(117), P4/mbm(127) |
|
163 |
P – b c |
P42bc(106), P42/mbc(135) |
|
164 |
P – c – |
P42cm(101), P-4c2(116), P42/mcm(132) |
|
165 |
P – c c |
P4cc(103), P4/mcc(124) |
|
166 |
P – n – |
P42nm(102), P-4n2(118), P42/mnm(136) |
|
167 |
P – n c |
P4nc(104), P4/mnc(128) |
|
168 |
P n – – |
P4/n(85), P4/nmm(129) |
|
169 |
P 42/n – – |
P42/n(86) |
|
170 |
P n – c |
P42/nmc(137) |
|
171 |
P n b – |
P4/nbm(125) |
|
172 |
P n b c |
P42/nbc(133) |
|
173 |
P n c – |
P42/ncm(138) |
|
174 |
P n c c |
P4/ncc(130) |
|
175 |
P n n – |
P42/nnm(134) |
|
176 |
P n n c |
P4/nnc(126) |
|
177 |
I – – – |
I4(79), I-4(82), I4/m(87), I422(97), I4mm(107), I-42m(121), I4/mmm(139), I-4m2(119) |
|
178 |
I 41 – – |
I41(80), I4122(98) |
|
179 |
I – – d |
I41md(109), I-42d(122) |
|
180 |
I – c – |
I4cm(108), I-4c2(120), I4/mcm(140) |
|
181 |
I – c d |
I41cd(110) |
|
182 |
I 41/a – – |
I41/a(88) |
|
183 |
I a – d |
I41/amd(141) |
|
184 |
I a c d |
I41/acd(142) |
|
Trigonal/Hexagonal |
||
|
185 |
P – – – |
P3(143), P-3(147), P321(150), P3m1(156), P-3m1(164), P312(149), P31m(157), P-31m(162), P6(168), P-6(174), P6/m(175), P622(177), P6mm(183), P-62m(189), P6/mmm(191), P-6m2(187) |
|
186 |
P 31 – – |
P31(144), P3121(152), P3112(151), P32(145), P3221(154), P3212(153) |
|
187 |
P – – c |
P31c(159), P-31c(163), P63mc(186), P-62c(190), P63/mmc(194) |
|
188 |
P – c – |
P3c1(158), P-3c1(165), P63cm(185), P-6c2(188), P63/mcm(193) |
|
189 |
R (obv) – – |
R3(146), R-3(148), R32(155), R3m(160), R-3m(166) |
|
190 |
R (obv)- – c |
R3c(161), R-3c(167) |
|
191 |
R (rev) – – |
R3(146), R-3(148), R32(155), R3m(160), R-3m(166) |
|
192 |
R (rev)- – c |
R3c(161), R-3c(167) |
|
193 |
R – – – |
R3(146), R-3(148), R32(155), R3m(160), R-3m(166) |
|
194 |
R – – c |
R3c(161), R-3c(167) |
|
195 |
P 63 – – |
P63(173), P63/m(176), P6322(182) |
|
196 |
P 62 – – |
P62(171), P6222(180), P64(172), P6422(181) |
|
197 |
P 61 – – |
P61(169), P6122(178), P65(170), P6522(179) |
|
198 |
P – c c |
P6cc(184), P6/mcc(192) |
|
Cubic |
||
|
199 |
P – – – |
P23(195), Pm-3(200), P432(207), P-43m(215), Pm-3m(221) |
|
200 |
P 21 – – |
P213(198) |
|
201 |
P 42 – – |
P4232(208) |
|
202 |
P 41 – – |
P4132(213), P4332(212) |
|
203 |
P – – n |
P-43n(218), Pm-3n(223) |
|
204 |
P a – – |
Pa-3(205) |
|
205 |
P n – – |
Pn-3(201), Pn-3m(224) |
|
206 |
P n – n |
Pn-3n(222) |
|
207 |
I – – – |
I23(197), I213(199), Im-3(204), I432(211), I-43m(217), Im-3m(229) |
|
208 |
I 41 – – |
I4132(214) |
|
209 |
I – – d |
I-43d(220) |
|
210 |
I a – – |
Ia-3(206) |
|
211 |
I a – d |
Ia-3d(230) |
|
212 |
F – – – |
F23(196), Fm-3(202), F432(209), F-43m(216), Fm-3m(225) |
|
213 |
F 41 – – |
F4132(210) |
|
214 |
F – – c |
F-43c(219), Fm-3c(226) |
|
215 |
F d – – |
Fd-3(203), Fd-3m(227) |
|
216 |
F d – c |
Fd-3c(228) |
|
Triclinic |
||
|
217 |
P – |
P1(1), P-1(2) |