| | Book (edition) | mark the degree of symmetry which belongs to each group of forms, and which is in fact the fundamental distinction...that in group 1 the crystals are formed or developed alike in all three axial directions ; in group 2 the...in the several lateral directions, but unand in group 3 the crystals are formed unlike in all three like...species. In f 229, of anorthite, of the feldspar group, the form is very similar to those of the monoclinic...octahedron, it is especially common with the spinel group of minerals similarly, f. 269, a more complex form | | | Book (edition) | mark the degree of symmetry which belongs to each group of forms, and which is in fact the fundamental distinction...study of these different systems will show that in group 1 1. : ; : A the crystals are formed or developed...developed alike in all three axial directions; in group 2 the development is alike in the several lateral...lateral directions, but unlike vertically ; and in group 3 the crystals are formed unlike in all three These...species. In f 229, of anorthite, of the feldspar group, the form is very similar to those of the monoclinic | | | Journal (volume) | nce of Pouitifagas: Strata in n the O eCarntiit} Group of Middle Pesueyhenains ieee eae aus eee COMMON...Ivens’ poes Arctic Items, in Central 527; and Cape West Horn Africa, Pedia, 530; Asia, 528;...Nevada Biped Tracks urate68; The Ploy of Chester county, Penna., 72 ; Kowalevsky on Elasmotherium, 72;...Minerals, 74; Axinite from a Annual Bethlehem, group of Minerals, 76; Heating oe. 75; for the Microscope...Dust Shower, 654; Microlite from Elba, 654; Amelia County, Va., minerals, 654; The Wm. S. Vaux Collection |
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