152 Scientific Intelligence. 



morphic]. Chromic iron is abundant on Mont d'Or ; an analysis 

 of it afforded 



J'e 3400, «r 61-33, Si 0-11, Mg 0-01, gi 4-63^100-08. 

 Ores of nickel occur in the serpentine, and are of workable value. 

 The only ore mentioned is a o:reenish piraelite-like silicate, a vari- 

 ety of which has been named garnierite. 



M. Gamier, who is in charge of the New Caledonia mines under 

 the I'rench Government, has jmblished on the Geology of New 

 Caledonia in the Bulletin of the Geological Society of IVance, II, 

 xxiv, 438, 1866, and in the An/tales des Mines,' VI, xii, 1867 ; 

 and later communications have appeared in the Moidteur de la 

 Xouvelle Caledonie.— Abstract of part of Address of Rev. W. 

 B. Clarke before the Royal Society of New South Wales, at the 

 AiDiiversary meeting in 3Iay, 1875. 



8. Achrernatite, a new mineral ; by Prof. J, W. Mallet. — 

 This mineral is in general compact, with indistinct crystalline 

 structure; an examination in polarized light suggested that it 

 might belong to either the hexagonal or tetragonal systems. 

 Color, a sort of liver-brown, though under the microscope the 

 pure grains appear pale sulphur-yellow. Streak, pale cinnamon- 

 brown. Luster, between resinous and adamantine. Translucent 

 on thin edges, in minute grains nearly transparent. G.= 5 -960 on 

 a solid fragment, but = 6*178 with a fine powder. H.= 3-4. 

 Fracture uneven ; brittle. A mean of three analyses gave, after 

 deducting impurities, 



f)As2O5,18-25,MoO3,5-0],Cl2-15,Pb6-28,PbO68-31 = 100-00, 

 which makes achrernatite a molybdo-arsenate of lead. Several 

 reasons are given for the conclusion reached that the arsenate and 

 molybdate of lead are in chemical combination, and not mechan- 

 ically mixed. The name is derived from dxptniaro:^ in allusion 

 to the fact that it contains no silver as was alleged. Locality, 

 the mine of Guanacere, State of Chihuahua, Mexico.— e/! Ghem. 

 Soc, II, xiii, 1141, Nov., 1875. e. s. d. 



9. Schrauffe, a now fossil resin from Bukowina described by 

 V. Schrockeringer. It occurs in rounded masses imbedded in a 

 bed of slatey sandstone. Its hardness is 2-2*8 ; specific gravity 

 1-1-2; fracture conchoidal ; color hyacinth-red. It is decomposed 

 -ath the evolution of gas at a temperature of 326° C. Its compo- 



' -' -- - It jg named after 



eichs., .Mav, 1875, 

 P- 134. E. s. D. 



10. Identity of Seebachite with B/iacolite ; v. Rath.— The 

 zeolite from Richmond, Victoria, described by Ulrich and later 

 made identical with herschelite by von Lang, was made a new 



i by Bauer, under the name of seebachit 



:ll,r 



pendix II, p. 50). A recent examination of the mineral, iii)on somt 

 good crystals, by vom Rath, has proved that the mineral called 

 seebachite is not orthorhombic, as claimed by von Lang, but 

 rhombohedral, and that it is really indentical with phacolite, a 

 variety of chabazite.— ^er. Ak., Berlin, 1875, 523. e. s. d. 



