670. 
671. 
672. 
673. 
674. 
675. 
676. 
677. 
678. 
679. 
680. 
681. 
682. 
683. 
684. 
685. 
L. 
Peep 
L. 
L. 
L. 
Mineralogical Cabinet. 4f 
. Haddam, Connecticut. A six-sided prism tending 
slightly towards acumination, and finally surmounted 
by the common six-sided pyramid. 
Haddam, Connecticut. The ordinary prism, surmount- 
ed by a six-sided pyramid, of which the alternate 
planes are unduly produced, in such a manner as to 
give the crystal the appearance of having a trihe- 
dral termination. 
. Haddam, Connecticut, do. 
do. Form like 670. 
do. Slender prismatic crystals. 
Hungary. Var. Amethyst. In short six-sided prism, 
terminated by six-sided pyramids. 
. Hungary. Prisms more slender than in 675. 
. St. Agnes, Cornwall. Var. Amethyst. In bud-shaped 
crystals; the prisms tending to an accumination. 
. Gayer, Saxony. Var. Smoky quartz Six-sided prism, 
surmounted by a six-sided pyramid; the edges and 
angles between the prism and pyramid variously 
‘modified. Color black, but translucent when held 
near the eye. } 
Dauphine. Var. Smoky quartz. A group of prismatic 
crystals, terminated as usual by pyramids. With 
crystals of carbonate of lime. 
Hartz. Var. Ferruginous quartz. In short six-sided 
prisms, with six-sided pyramids. Color red. 
Dauphine. A large, irregular shaped crystal of quartz, 
penetrated by chlorite and asbestus. With carbonate 
of lime. 
. Vermont. Portion of a prism of quartz. 
. Snowdon, Wales. Var. Milky quartz. A prismatic 
crystal, with one plane of the terminating pyramid 
unduly extended. 
. Przibram, Bohemia. Var. Milky quartz. This is the 
white amethyst of the German mineralogists. 
. Sandwich Islands, In six-sided pyramids, upon chalce- 
dony. 
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