NATURAL HISTORY. 
169 
GALLERY.] 
greenish-grey, and white scaly varieties known by the name of lepidolite, 
from Rozna m Moravia, likewise comprises several large-foliated va¬ 
rieties of what was formerly considered as common mica, such as that 
from Zinnwald in Bohemia and Altenberg, accompanied by apatite, tin¬ 
stone, and topaz_The species and varieties of the talcose substances 
are likewise very imperfectly understood. Among the specimens of 
talc in this glass Case may be specified the common or Venetian (which 
enters into the composition of cosmetics), and the indurated talc; to the 
former of which may be referred the green radiated variety from Siberia, 
composed of distinct groups of small diverging laminae, and to which 
the name of pyrophyllite is commonly given ;— agalmatolite, (Werner’s 
bildstein, Haiiy’s talc glaphique), employed by the Chinese for carving 
images, vessels, &c. chlorite, crystallized in aggregated, small, modi¬ 
fied rhombic prisms ; the earthy and foliated varieties, coating crystals 
of octahedral magnetic iron-stone, &c. ;— pinite , crystallized in regular 
hexagonal prisms, and gieseckite, from Greenland, which appears to be 
a variety of this species.— Fahlunite, under which name several distinct 
substances have been noticed by authors. 
Case 33. This and part of the following Case chiefly contain sub¬ 
stances related to hornblende or amphibolic minerals, among which may 
be specified the basaltic and common hornblende , including the parga- 
site ;—the actinolite or straklstein (divided by Werner into the glassy, 
common, and fibrous varieties) ;—the grammatite or tremolite (so called 
from Val Tremola, where, however, it is not found), among the speci¬ 
mens of which are the fine, fibrous varieties, resembling asbest; the 
glassy tremolite, in dolomite and granular limestone, kc.—Arfvedsonite 
•— AnthophyUite. 
Case 34. Part of this Case is filled with the mineral substances 
called asbestine , many of w hich appear to pass into some of the varieties 
of amphibole in the preceding glass Case. Among these may be ob¬ 
served specimens illustrative of the transition from a very close to a loose- 
fibrous structure ;—several varieties of the flexible asbest or amianth , 
with some antique incombustible cloth, paper, &c., made of it;—the 
varieties called common and schiller-asbest, mountain wood, mountain 
cork, or nectic asbest, Sec., separate, and in combination with other sub¬ 
stances ;—the blue and yellow asbest from South Africa, to which 
the name of krokydalite , has been given. The remainder of this 
Case contains pyroxenic minerals:— augite, in separate crystals, and 
embedded in lava from Vesuvius, together with groups of well-de¬ 
fined crystals from Arendahl in Norway, where this substance occurs in 
primitive rocks ;—th e jeffersonite ;—the granular variety called cocolite ; 
—the varieties of diopside, at first considered as a distinct species, in¬ 
cluding the mussite and alalite from Piedmont;—the sahlite or malaco- 
lite, to which also belongs the baikalite, of which a few fine specimens 
are here deposited ; the pyrgome or fassaite, and the achmite. The 
metalloid diallage or diallagite , also called schiller-spar, from the Hartz, 
Salzburg, &c., the bronzite and the hypersthene or paulite (Labrador 
hornblende of Werner), may likewise be referred to this' tribe of 
minerals. 
Case 35. Among its contents may be specified the mineral sub¬ 
stances which have been described under the appellations of thallite, 
arendalite, acanticone, delphinite, &c. ; most of these are Werner’s pis- 
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