55. 
56. 
57. 
59. 
60. 
61. 
62. 
63. 
64. 
65. 
66. 
Mineralogical Cabinet. 
. Shawneetown, Illinois. An acute rhomboid, obtained 
from cleavage. 
. Derbyshire. In purple crystals. Chaux fluateé bor- 
dée. H. 
. St. Agnes, Cornwall. Purple and white. The two 
planes which replace each of the edges in 56, are 
here produced until they extinguish the cubic faces, 
and result in a figure bounded by twenty-four trian- 
gular planes. Chaux fluatée hexatetraedre. H. The 
two small crystals exhibit this modification best. 'The 
specimen contains, also, quartz, topaz, mica, and ox- 
ide of tin. 
. Cumberland, England. In cubes of a greyish purple 
color. Chaux fluatée cubique. With small crystals 
of blende. 
. Cumberland, England. In cubes, color purple mixed 
with white, accompanied by blende and cubo-octohe- 
dral crystals of galena. 
. Cumberland, England. A large distinct cube, of a pale 
purple color, with crystals of carbonate of lime in 
the form of the equilateral rhomboid, and brown 
crystals of pearl spar. 
. Shawneetown, Illinois. In cubes, grouped laterally ; 
color purple. 
. Erenfriedersfort. In cubes of a topaz yellow color, 
coated with minute crystals of quartz and iron py- 
rites. 
. Johann Georgenstadt, Saxony. In greyish yellow cubes, 
invested by sulphate of barytes, crystals of carbonate 
of lime, and iron pyrites. 
. Saxony. In greenish white cubes, intermingled with 
crystals of quartz. 
. Moldava Bannat. Green; massive fluor, invested by 
distinct crystals of fluor, of a greyish color. 
. Derbyshire, England. White cubic crystals, contain- 
ing iron pyrites. 
