与 «PYRITOHEDRON»相关的英语书籍
在以下的参考文献中发现
pyritohedron的用法。与
pyritohedron相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
High Quality Content by WIKIPEDIA articles! In geometry, a pyritohedron is an irregular dodecahedron with pyritohedral (Th) symmetry.
Jesse Russell, Ronald Cohn, 2012
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, a pyritohedron is an irregular dodecahedron with pyritohedral (Th) symmetry.
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken, 2010
3
Dana's Minerals and How to Study Them (After Edward ...
This class may show the cube, octahedron, and rhombic dodecahedron, but the
only characteristic form in this class is the pyritohedron. The lower symmetry in
this class can be observed in the striations found on the cube face, which
alternate ...
Cornelius S. Hurlbut, W. Edwin Sharp, 1998
4
Geological Survey Professional Paper
Its most common associate among the gangue minerals is quartz. The
pyritohedron is the most commonly observed form where crystals are well formed
, though the cube is also common. Leadville is famous among mineralogists for
its large, ...
5
A Handbook of Mineral Crystals, Rocks and Ores
Pramod O. Alexander. Fig. 8.3.6 Pyritohedron and Diploid Fig. 8.3.7 :
Tetrahedron in reading Position Table. 8.3.4 : Where as the entire cube faces of
galena type are like faces possessing both geometrical and structural symmetry
pyrite cube ...
Pramod O. Alexander, 2009
6
United States Geological Survey Professional Paper
in the Old Jordan mine, Utah level, Compromise stope (see Pl. XVIII). They show
cubic forms, 2 inches square, finely striated by twinning with the pyritohedron (
pentagonal dodecahedron). Behind this lining of cubes, at a distance of 1 to 2 ...
7
Ionic Compounds: Applications of Chemistry to Mineralogy
Figure 96 The pyritohedron. The pyritohedron above is shown in Figure 97 with
one of the faces lettered. Assign the Miller indices to this face. - This face clearly
cuts the al-axis and is parallel to a3. It is also inclined toward ' a2 but does not ...
8
The Minerals of Franklin and Sterling Hill, Sussex County, ...
Crystal of pyrite showing the octahedron, the cube, and the pyritohedron equally
developed 30 1 9. Crystal of pyrite showing the octahedron modified by
unequally developed faces of a trapezohedron 30 10. Crystal of pyrite showing
the ...
... deduces that A = B = C = 1; that the ellipsoid is the sphere of radius one with
center the origin. Moreover ii = b = '6 = 0. The pyritohedron degenerates to a
rhombododecahedron inscribed in the sphere. This is exactly Thurston's
construction ...
Boris N. Apanasov, Walter D. Neumann, Alan W. Reid, 1992
10
Geological Survey professional paper
Crystal of pyrite showing the octahedron alone 30 7. Crystal of pyrite showing the
octahedron and the cube in balance 30 8. Crystal of pyrite showing the
octahedron, the cube, and the pyritohedron equally developed 30 9. Crystal of
pyrite ...
Geological Survey (U.S.), Geological Survey (U.S.). Geographic Names Information Management, 1987
