260 Mtseeilaneous Localities of Minerals. 



Chem. Characters, Effervesces ; strongly in the mineral 

 acids when in a fine powder. Nitric acid, with the assist- 

 ance of heat, dissolves it entirely, exeept a small portion of 

 silex. Before the blow-pipe it immediately changes brown, 

 but scarcely fuses. 



Form, In large amorphous masses, showing no tendency 

 towards crystallization. It is found fn many places in 

 Cummington, but principally near the meeting-house. It 

 has been called by some mineralogists, red oxide of manga' 

 nese ; by others, siliceous oxide of manganese, and gray oxide 

 of manganese. All the specimens I have examined effer- 

 vesced in acids, both the red and gray varieties. It is much 

 mixed with masses and particles of quartz, magnetic iron> 

 and sometimes earb. lime. 



5. By George W. Benedict.* 



1. Angite or sahlite in very perfect crystals — translucent 

 — foliated parallel to the base. 



Var. a. Grayish green ; eight-sided with a variety of ter- 

 minations ; of all sizes, from a twentieth of an inch to 4 or 

 even 6 inches in diameter. (Greenwood.) 



b. Dark bottle green ; eight-sided with a diedral summit^ 

 having the terminal edge usually replaced by a third plane. 

 Found adhering to coccolite. (2 miles east of Greenwood.) 



c. White ; abundant and large, but not so perfect as the 

 others, being mostly exposed to the weather ; white and green 

 crystals occur on the same specimen and sometimes the one 

 protruding from the other. (About a mile east of the two 

 ponds.) 



2. CoceoUie, ©r coarsely grained sahlite ; grains foliated 

 from the size of a pin-head to that of one inch in diameter — 

 extremely beautiful. 



Var. a. Emerald green ; in great abundance ; translucent 

 in a high degree. (Greenwood.) 



b. Leek green; bottle green; greenish and reddish white, 

 of all shades and sizes, semitransparent, the white transparent 

 ver-y splendent. (2 miles east of Greenwood.) 



3. Actynolite; dark green in perfect rhombic prisms with 

 diedral terminations. (2 ntiles east of Greenwood.) 



* Some of these minerals have been noticed in a former number, but 

 ft is thought that a succinct account of the whole may be interestiiig. 



