70 Mr. Haidinger's Account of the Specific Gravity 



21. Macrotypous lime-haloide, Brown-spar, greyish-white crys- 

 tals of the form R, perfectly cleavahle in pretty even faces, lustre 

 almost pearly. Is found in Gollinggraben in Salzburg, in fissures 



of a limestone rock, , 2.842 



22. Brown spar, greyish- white, easily cleavahle, affording bril- 

 liant planes, Freiberg, 2.861 



23. Brown spar, reddish-white crystals of the form R. (P) 3 , 



from the Himmelfarth mine near Freiberg, 2.870 



24. Rhomb spar, greyish-white, cleavahle, from a bed of oc- 

 tahedral iron ore, where it is associated with amphibole, &c. from 

 Presnitz, Bohemia, 2.859 



25. Dolomite, white granular composition, forming the mass in 

 which tremolite is imbedded, from St. Gothard, 2.859 



26. Rhomb spar, yellowish-white, perfectly cleavable, 2.878 



27. Ankerite,§ yellowish-white cleavable masses from Eisenerz, 

 Stiria, 3.000 



28. Ankeriie, in granular compositions consisting of small indi- 

 viduals of a grey colour, from the Raiding mountain in Stiria, 3.049 



29. Ankerite, a greyish-white granular variety, from the val- 

 ley of Rotz, in Stiria, 3.084 



30. Ankerite, large cleavable masses, of a cream-yellow colour, 



from Golrath, Stiria, 3.089 



31. Breunneriie\ , a clove-brown, perfectly cleavable variety, 

 forming imbedded crystals, from the Tyrol, 3.001 



*32. Wavellite, globular shapes of a dirty asparagus-green co- 

 lour, from Barnstaple, Devonshire, 2.337 



Order II. Baryte. 



1. Red manganese, a massive variety, compound parallel to the 

 planes of R — co, like slate spar, from Beschertgluck mine near 

 Freiberg, 3.428 



2. Sparry iron, crystals from the Pfaffenberg mine, near Harz- 

 gerode, in the Hartz, 3.829 



3. Prismatic Zinc-baryte, yellowish-white semi-transparent 

 crystals, from Rossegg, Carinthia, 3.380 



4. Rhombohedral Zinc-baryte, honey-yellow crystals, in the 



§ I venture to propose this name for the paratomous Lime-haloide of M ohs, in 

 honour of Professor Anker of Gratz, an individual who has done much in in- 

 vestigating the mineralogy of his country, Stiria, where this substance occurs in 

 immense quantities, and has been first distinguished as a particular species by Pro- 

 fessor Mohs. It is mentioned in the Edinburgh Journal of Science, No. II. p. 325. 



•\ This is the brachytypous Lime-haloide of Mohs, the carbonate of iron and 

 manganese of Brooke. It was first discovered and distinguished from the other 

 species of the genus Lime-haloide, by Mr. Mohs, while at Gratz, and described 

 in his Characteristic of the Natural History System, published in 1820. It is 

 named in honour of Count Breunner, an Austrian nobleman, well known in this 

 country, who unites an extensive knowledge in several departments of natural 

 history, with much zeal for the promotion of the sciences. 



