258 



Third Supplement to Dana's Mineralogy. 



As 



Sb 



S 



Fe 





42 05 



110 



18 52 



37 65 = 



99-32 



43 78 



105 



20.45 



34-35 = 



99 43 



44-83 





20 38 



44 32 = 



99 53 



44-02 



092 



19-77 



34 83 = 



99 54 



of No. 1, 2 678; of the same in fragments 2 688. Lithia was carefully looked for, 

 and none found. 



Magnesite [p. 441, 507, and Suppl. ill. — Occurs in crystalline schist near Bruck in 

 Sty ria, according to Fr. Foetterle (Jahrb. k. k. geol. Reichs., 1855, 68). Analysis 

 afforded. % 0 99 22. Fed 0 69, Ca C trace, insoluble 009; another of the same, 

 94 77, 1 54, 0-86, 2 83. Specific gravity =3 033. H.=4 5. R : R=107° 16'. 



Marcaritr [p. 60J. — An analysis of a specimen from the Oxford clay near Han- 

 nover, afforded Dr. A. Vogel, Jr. (N. Jahrb. f. Min. etc., 1855, 676), Sulphur 52 7, 

 iron 46 9=99 6. 



Mispickel jp. 62, 509, and Suppl. I, it].— Analyses by G. A. Behncke, in the lab- 

 oratory of Prof. H. Rose (Pogg. xcviii, 184): 



1. Sahla. Sweden, G =5-8205, 



2. Alienberg, Silesia, G=6 042, 



3. Freiberg, Saxony, G.= 6 046, 



4. Landeshuth, Silesia, G =6 067— 6 106, 



Sb in 1, with trace of Bismuth; in 2, trace of copper; in 4, trace of copper and 

 lead. 



The first three analyses correspond closely to the received formula Fe As 2 -t-Fe S 2 . 

 For No. 4, Mr. Behncke writes the formula 3Fe S 2 +2Fe 2 As 3 . But it has the same 

 crystalline form as the true mispickel, and the peculiar composition may therefore 

 be due to impurities. 



An ore related to mispickel, from Zwiesel, having G.=621, afforded Dr. A. Vogel, 

 Jr., on analysis (IV. Jahrb. f. Min. etc. 1855, 674), Arsenic 54-70, sulphur 7 -44, iron 

 35 20=97'34. This in near the result of Jordan's analysis of an ore from the mine 

 Felicitas of Andieasberg, which gave, Arsenic 55-00, iron 36 43, sulphur 8-34=99 79. 

 It gives the formula Fe S-fFe 2 As 3 , while that of ordinary mispickel is Fe S 2 -}-Fe 

 As 2 , and therefore the author regards it as a distinct species. 



Nitre [p. 433, and Suppl. il. — The nitre caves of Tennessee occur along the lime- 

 stone slopes and in the gorges of the Cumberland table-land. A company is formed 

 for working the nitrous earth in White County. — Safford's Rep., p. 117. 



Opal [p. 151 J. — According to E. F. Glocker, in Luckau, Moravia, a metamorphic 

 limestone associated with gneiss contains a bed of brown hornstone and green opal 

 (Jahrb. k k. geol. Reichs , 1855, 98). The hornstone bed is 2 to 4 feet thick, and in 

 some parts contains cavities with quartz crystals. The opal has a beautiful leek- 

 green color, passing into yellow, brown and black, and occurs in a layer £ to 2 inches 

 thick. Unghwarite is sparingly associated with the opal; and occasionally pellucid 

 hyalite is found in grouped concretions in a calc sinter. 



Ozocerite [p. 474, and Suppl. ij. — In the Carpathian sandstone formation.— Glocker, 

 Jahrb. k. k. geol. Reichs., 1855, 101. 



PA.TERAITE. — A sulphuret of molybdenum containing 3 of sulphur to 1 of mo- 

 lybdenum (Mo S 3 ), has been thus named by Haidinger. — E. Zschau, in a letter to 

 G. J. Brush. 



Pectolite [p. 305, and Suppl. it]. — Radiated crystallizations of pectolite occur in 

 Ayrshire, having the columns 3 feet in length. — R. P. Greg, Jr. 



Piauzite [p. 469]. — According to Kenngott, occurs at Mount Chum near Tuffer in 

 Styria; and near Tutfer, 3700 pounds (avoirdupois) have been obtained. It is a 

 black re^in much resembling a slaty and lamellar black coal. — Jahrb. k. k. geol. Reich- 

 sanst.. 1855. 



PICROMERID, Scacchl—k sulphate of magnesia and copper, (Mg. Cu) S+3l£, 

 obtained with the cyanochrome of Vesuvius from solution, and similar in form, the 

 two being isomorphous, but color white. Angles: Cor 0: t'i=75° 12', 0 : li= 

 154° 39', O : 2i=116° 41', 7:7=109° 50'.-— Op. cit., p. 191. 



Pinguite [p. 338]. — At Sternberg in Moravia.— Glocker, Jahrb. k. k. geol. Reichs., 

 1855, 99. 



