574. 
575. 
576. 
577. 
578. 
579. 
580. 
581. 
582. 
583. 
Mineralogical Cabinet. 
. Ceylon. In rolled pebbles, and angular fragments. 
do. do. artificially attached to a 
specimen of white granular limestone. 
. Sparta, New-Jersey. In distinct octahedral crystals, of 
a dull red color, imbedded in white carbonate of 
lime, with crystals of greyish hornblende, and wax 
yellow masses of brucite. 
. Bolton, Massachusetts. In imperfect crystals of a pale 
reddish color, with yellowish brucite, and iron py- 
rites in white carbonate of lime. 
. Boxborough, Massachusetts. Var. Pleonaste. In 
greenish, indistinct crystals, imbedded in carbonate 
of lime, with brown mica, and hornblende. A por- 
tion of the lime has been removed by the aid of 
acids. 
. Boxborough, Massachusetts. Var. Pleonaste. 
. Amity, New-York. Var. Pleonaste. In very distinct 
octahedra; color green; accompanied by brucite, 
and imbedded in carbonate of lime. 
. Orange, New-Jersey. Var. Pleonaste. Black, with 
serpentine and compact brucite. 
. Orange, New-Jersey. Var. Pleonaste. Color black ; 
an octahedral crystal, measuring four inches round 
the base; in carbonate of lime. 
. Haddam, Connecticut. In minute black octahedra; in 
white feldspar, with pinite. 
. Munzoni, Tyrol. In black octahedra in feldspar. 
Sp. 2. Octahedral Corundum. 'Triv. Automalite. 
. Fahlun, Sweden. In distinct octahedra, in talcose- 
slate. 
. Franklin Iron Works, New-Jersey. Crystallized and 
fine granular; color green; in carbonate of lime. 
. Haddam, Connecticut. Massive; color green; in gran- 
ite, with manganesian garnet. 
. Haddam, Connecticut. do. 
