In 1905, a certain Professor Paul Groth of Müchen, Germany, published his textbook "Physikalische Krystallographie" in Leipzig with the publishing firm of Wilhelm Engelmann.  In this textbook are 750 illustrations, many of which are crystal forms of "wichtigsten substanzen" (the most important substances).  A small but representative portion of Herr Professor Doktor Groth's 820 page tome is found at the link above.

Also in 1905, the Dr. F. Krantz Company of Bonn, Germany, produced a particular set of 416 crystal models in pearwood as described in their Krantz  Katalog Nr 6b.  The crystal model numbers listed on the right side of this page are the Krantz catalog numbers for those models which are extant in the EOS collection.  Catalog Number 6b may be found at the link above.

The 416 wooden crystal models in Krantz Catalog 6b were manufactured in collaboration with Professor Groth.  These models correspond to the illustrations in Professor Groth's textbook.  The figure numbers to the right on this page are from "Physikalische Krystallographie".

Crystal Model Number 7 Drawn with KrystalShaper
                                       © JCrystalSoft, 2013

Symmetry Class, Unit Cell, and Miller Indicies for Model 7 in KrystalShaper
                                                                   © JCrystalSoft, 2013

Model Numbers
Krantz Catalog 6b

Unknown half
3
7 cracked
8
10
12
13
15
16
17
18
21
23 (? or 25)
26 cracked
29 (2 piece)
30
33
35
38 (2 piece)
39
43
44
46
53
56
57
58 ?
65
67
69
70
71
75
76
77 ? [7 on top of 9]
79? [separate model]
79
80
81
83
84 (or 87, uncertain)
85 (?)

87 (or 80 [7 on top of 0]) damaged
90
91
92
93
94
96
96
100 damaged
101 (102 [1 on top of 2])
102
105
106 (107 [7 on top of 6])
107
109 (or 110?)
111
112
115
117
119
121
122
123
124
125 (127 [7 on top of 5])
127
128
129
130
133
135
136
137
138
139
140 (141 [1 on top of 0]
141
143
144
145
146
149
150
151
153
154
155
156
157 ?
157
158
159
160
161
163
164 damaged
166
171
172
174
175
176
177
178
180 (unknown underneath)
180
181
182
183
193
194
195
196
197
198 (unknown underneath)
200 (unknown underneath)
201
202
205 (or 203 [uncertain])
209
210 (201 [1 on top of 7])
211
212
213
214
215
217

219
220 ?
220 (227 [0 on top of 7])
222 (slight damage)
223
225
228 (221 [8 on top of 1])
229 (unknown underneath)
230
232 (unknown underneath)
237
237
239
240
240
241
242
243
244
245 ? (245,246,248 all uncertain numbers)
246 ?
247
248 ? (out of order; goes with 245, 246)
250
251 (2 piece)
253
256
257
258 (257 [ 8 on top of 7])
259
260
261
262
263 (unknown underneath)
265
267
268
284 or 234 damaged
286 (unknown underneath)
293
294
295
297 (unknown underneath)
298
299
302
303 (unknown underneath)
305
306
307 (unknown underneath)
310
311 (unknown underneath)
312 (unknown underneath)
318 (unknown underneath)
321
324
327 (unknown underneath)
332
333
338
338 ?
339
343 (320 underneath)
349 (unknown underneath)
350
353 damage
354
355
356
357 ?
361
363
364
371
377
380
389 damage
390
392
394
397
400
401
402
403
406
407
408
412
414

Figure Numbers
Physikalische Krystallographie

-
189
194
195
196
198
199
204a
204b
205
206
(no number listed)
212
217
220
223
226
228
231
(no number listed)
(no number listed)
234
237
245
248
249
250
258
262b
264
265
266
271
273
274
276
-
277
278
280
281
(no number listed)
283
(no number listed)
285
286
287
288
290
-
(no number listed)
294
295
298
299
300
302
303
305
308
310
313
315
316
317
318
319
321
322
323
324
(no number listed)
336
337
338
339
340
341
342
345
346
347
348
351
352
353
355
356
357
358
359
-
361
363
365
366
368
369
371
(no number listed, “Modell 152 . . . Modell 140”)
(no number listed)
(no number listed, “Modelle 132, 141, und 142”)
374
375
376
377
379
-
380
381
382
388
405
406
407
408
409
412b
413
414
418
422
423a und b
(no number listed)
424
425
426
427
429
(no number listed)
431
-
433
435
437
440
441
(no number listed)
442
446
-
450
451
-
452
453
454
455
457
458
459
461
140
463
466
469
470
471
472
473
(no number listed)
475
(no number listed)
484
488
489
504
507
517
523a
523b
525
523
527
530
531
533
534
535
538
539
540
546a
548
553
556
(no number listed)
(no number listed)
(no number listed)
-
562
567
(no number listed)
(no number listed)
(no number listed)
(no number listed)
(no number listed)
571
(no number listed)
578
580
581
(no number listed)
(no number listed)
(no number listed)
589
591
593
595
598
601
602
603
604
607
608
609
(no number listed)
(no number listed)

Figure 194 and related text from Professor P. Groth's 1905 version of "Physikalische Krystallographie"

Model 7 entry in the Dr. F. Krantz Company Catalog 6b.  Note that model 7 corresponds to figure 194.

Unless specified on the Model Page, the distance values in KrystalShaper are given in centimeters and indicate the actual size of the wooden model.

Distances are measured, of course, from the orgin of the coordinate system.

In Model 10 for example, the distance between parallel planes {010} and {0 -1 0} is 2.41 centimeters.

webpages and Eos image copyright 2013 M Nealon

Model 10 axes
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