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Plate XIII.
Figures 1 and 2. Fluorite.
1. F l u o r i t k r y s t a l l, hexahedron, twinned through growth
from a second smaller one; purple, from Cumberland.
The upper hexahedron surface is paneled.
2. S t e n g l i g e r F l u o r i t, violet, lighter and darker and
white striped; forming hexahedra at the free ends,
from Cumberland. It is made into bowls in England
and processed all kinds of small art objects.
Figures 3-6. Barite compounds.
3. Witheritkrystall, apparently hexagonal pyramid with
cut side edges, formed by the combination
an orthorhombic pyramid and a longitudinal dome,
on which the side edges of the pyramid are replaced by a second
more pointed pyramid and the side edges of the doma
a sharper doma are sharpened.
4. Barite crystal from Hungary, rhombic plate with straight lines
Edge surfaces, which as a combination of the base surfaces with
a prism or placed differently as a combination of
Longitudinal surfaces with a transverse dome is considered.
5. The same from corridors of colored sandstone in the black forest, oblong table with sharpened edges, which
as a combination of the base areas with a transverse and
Longitudinal doma, or put differently, is considered as a combination of the longitudinal sticks with a prism and a longitudinal doma.
6. The same, from the Auvergne in France, Combination
of a transverse dome and prism, which are placed differently than
Combination of a prism with a transverse dome is considered.
Figures 7-9. Celestine
7. Celestine crystal from Girgenti in Sicily, combination of a longitudinal domain and prism with the base surfaces,
which are placed differently than the combination of a longitudinal domain
is considered with the longitudinal surfaces and a transverse dome.
8. Lik., Ibid., Combination of a longitudinal domain and
Prism with the base surfaces and a transverse dome, which
set differently than a combination of a longitudinal domain with
the longitudinal curses, a transverse dome and a prism
is looked at.
9. Cölestin crystals of form 8, there, on sulfur
grew up.
Fig. 10-13 Potash Salts.
10. Arcanite, sulphate of potash, crystal as a factory product,
Combination of an orthorhombic pyramid and one
Longitudinal dome, apparently forming a hexagonal pyramid.
11. K a l i - A l a u n, factory product, five in a row with
fused octahedra.
12. N i t r i t, potassium nitrate; Factory product, combination of one
Orthorhombic prism with the longitudinal surfaces, two longitudinal domes and a pyramid.
Fig 13.
Likewise, combination of the same prism with the
Longitudinal surfaces, a longitudinal dome and the pyramid, only
drawn in another position.
Figures 14-17. Sodium salts.
14. Trona of Merida in Columbia, Combination of the
Base and transverse surfaces with a clinorhombic hemi pyramid, which is drawn so that the horizontal
Areas here stand vertically.
15. Soda, factory product; Combination of the long surfaces with
a clinorhombic prism and a hemipyramid,
forming a rhomboid tablet with sharpened edges,
drawn here in such a way that it appears as a clinorhombic pyramid
combined with the longitudinal planes appears.
16. F a s r i g e s S t e i n s a l z, colored red by iron oxide,
from the lower banks of rock salt in the shell limestone
at Wilhelmsglück not far from Schwäbisch-Hall.
17. Nitrate, crystals by recrystallizing the mineral
Preserved occurrence, a group of blunt rhombohedra
with stair-like recessed areas.
Figures 18 and 19. Boracite.
18. Crystal from the Gyps of Lüneburg, Combination of
Hexahedron with the rhombic dodecahedron and a tetrahedron.
19. Lik., Ibid., Combination of the tetrahedron with the
Hexahedron and rhombic dodecahedron.
20. Sylvinkrystall von Staßfurt, combination of the hexahedron
with the octahedron.
21. Table salt, as is the case with the evaporation of the brine in the
Salt pans separates, so-called step-like formation
hexahedral crystals.
22. Borax, crystal, which forms the combination of the clino-rhombic prism of 87 ° with the transverse and base faces and on which the faces of a posterior one
Hemipyramids occur as blunt surfaces of the sharp Com binationskanten the base with the prism.
23. Glauber's salt crystal, in the direction of the transverse axis
extensive combination of the clinorhombic transverse, base and longitudinal surfaces with the clinorhombic prism of
86 ° 31 'and the longitudinal dome of 80 ° 38' end edge angle.
24. Epsom salt crystal, factory product, combination of one
orthorhombic prism with a truncated orthorhombic pyramid, which appears almost square because the
Prism has the edge angles 90 ° 38 'and 89 ° 22'.
The orthorhombic form immediately becomes indubitable when
As indicated in the figure, edge 2 opposite prisms and the opposite end aunts of the pyramid
are jaded.
25. S a l m i a k, interpenetrating twin of two hexahedra,
Factory product.