106 PHYSIOGRAPHY. 



GREEN IRON-EARTH. 

 Grune Eisenerde. WERN. Hoffm. H. B. III. 2. S. 304. 



Reniform, botryoidal, globular. Surface smooth 

 and shining. Composition very thin columnar, 

 impalpable, also curved lamellar. Massive : com- 

 position impalpable. Fracture even ... uneven. 

 Sometimes in the state of powder. 



Lustre resinous. The impalpable particles dull. 

 Colours siskin-green, passing into black and yel- 

 low. Streak yellowish-grey. 



Brittle. Semi-hard. Not particularly heavy. 



It becomes brown and black before the blowpipe, but 

 does not melt. It is said to colour glass of borax red. It 

 is not dissolved in nitric acid. Both the friable and the 

 massive varieties have been found at Schneeberg in Saxony, 

 and in the Hollerter Zug in the county of Sayn. 



HATCHETINE. 



Hatchetine. J. J. CONYBEARE. Ann. of Phil. Vol. I. p. 136. 

 PHILL. p. 374. 



In the shape of flakes like spermaceti, or of granu- 

 lar masses, like bees' wax. 



Lustre slightly glistening and pearly, and of consi- 

 derable degrees of transparency, when in flakes, 

 else dull and opake. Colour yellowish-white, 

 wax-yellow, and greenish-yellow. 



Hardness, like soft tallow. Very light. Without 

 odour or elasticity. 



It melts below the boiling point of water. Ether dis- 

 solves it readily ; being evaporated, the solution leaves a 

 viscid oily inodorous matter. Distilled over the spirit-lamp, 

 it gives a bituminous smell, a greenish-yellow butyraceous 

 substance is disengaged, and a coaly residue remains in the 



