Elements of mineralogy, crystallography and blowpipe analysis from a practical standpoint .. . — . \ FlG. 134- fY~-- ff -if- W. ;U-----_: 1 -«- 1 Fig. 135. Fig. Figs. 131, 132, 133 and 134 show variations in habit in com-binations of the unit pyramid /, basal pinacoid c and first andsecond order prisms, m and a. In Fig. 135 a flatter pyramido = (a : 00 « : a : i c) occurs with the basal pinacoid and second orderprism, and in Fig. 136 a third order pyramid ^ = {^a:\a? ifi)occurs with the unit prism, basal pinacoid, pyramid of first ordero and pyramid of second order e = (2a ?.2a : 2c).
Elements of mineralogy, crystallography and blowpipe analysis from a practical standpoint .. . — . \ FlG. 134- fY~-- ff -if- W. ;U-----_: 1 -«- 1 Fig. 135. Fig. Figs. 131, 132, 133 and 134 show variations in habit in com-binations of the unit pyramid /, basal pinacoid c and first andsecond order prisms, m and a. In Fig. 135 a flatter pyramido = (a : 00 « : a : i c) occurs with the basal pinacoid and second orderprism, and in Fig. 136 a third order pyramid ^ = {^a:\a? ifi)occurs with the unit prism, basal pinacoid, pyramid of first ordero and pyramid of second order e = (2a ?.2a : 2c). Vanadinite.—Axes a : c =? i : The usual combination, Fig. 137, is the prism m and base c, but Fig. 137. Fig. 138. M
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