ORDER II. BRACHYTYPOUS PARACHEOSE-BARYTE. 105 



3. Frequently the present species is found along with 

 compound varieties of rhombohedral Lime-haloide, upon 

 beds in gneiss, mica slate, clay slate, and newer rocks ; 

 sometimes with prismatic and rhombohedral Iron-ore, pris- 

 matic Hal-baryte, and other species. It likewise occurs in 

 metalliferous veins, accompanied by hexahedral Lead-glance, 

 tetrahedral Copper-glance, hexahedral Iron-pyrites, pyra- 

 midal Copper-pyrites, &c., and is not uncommon in that 

 class of veins in primitive mountains, in which the mass of 

 the vein consists chiefly of the constituent parts of the 

 rocks themselves. It is more rarely met with in the cavi- 

 ties of trap rocks. 



4. The beds upon which the varieties of the present spe- 

 cies are found in immense quantities in Stiria, Carinthia, 



'and the bordering countries, form coherent tracts which 

 extend along the chain of the Alps on one side into Austria, 

 and on the other into Salzburg, Sec. The celebrated Erzberg 

 near Eisenerz, is situated in one of them. In similar re- 

 lations it seems to occur in Schmalkalden, Siegen, &c. 

 In Anhalt large masses of this species occur in veins of 

 very considerable size, traversing greywacke, and in this 

 rock it seems also to occur in various other places of the 

 Hartz, and in many other countries. At Freiberg it is 

 found in silver veins. In the high mountains of Salzburg 

 it is met with in minute crystals in narrow veins, along 

 with rhombohedral Quartz, prismatic Talc -mica, &c. It 

 is also found with Tin-ore, as at Ehrenfriedersdorf in 

 Saxony, Wheal Maudlin, St Just, and other places in 

 Corn '.vail. Brachytypous Parachrose-baryte is besides 

 found in more or less considerable masses in Bohemia, 

 Bayreuth, Wiirtemberg, Switzerland, France, Spain, and 

 in many other countries. 



5. In many of the above mentioned countries, particu- 

 larly in Stiria and Carinthia, considerable quantities of cast 

 and wrought iron are obtained from the species, but par- 

 ticularly steel, for the production of which it is highly 

 valuable. 



