140 Mr HAIDINGER'S Mineralogical Account of 



freude near Johanngeorgenstadt, and at Hirschberg in West- 

 phalia. These are chiefly short thick prisms, often resembling 

 Fig. 3. or nearly so, terminating on their extremities in nume- 

 rous fibres. Large flattish crystals of great beauty, terminating 

 in sharp elongated pyramids, with curved faces, occur at Maes- 

 kamezo, near Maggar Lapos, south of Kapnik in Transylvania, 

 in geodes of brown hematite, and associated with crystals of 

 quartz. This variety is found in a thick bed, of no great extent, 

 of brown iron-ore in gneiss. A similar one occurs also in a simi- 

 lar position at Gyalar near Vayda Hunyad in the same country. 

 Cleavable individuals of considerable size are found near Goslar 

 in the Hartz, in a mountain called Gingelsberg near the Ram- 

 melsberg. They are imbedded in small veins of quartz and 

 calcareous spar in clay-slate, particularly where they cross each 

 other. Distinct though small crystals are met with in many of 

 the mines in the west of Germany, for instance at Tiefe Kohlen- 

 bach in Siegen ; still smaller ones were found many years ago 

 in the Palffy iron-mines of Haerethof near Frohstorf in A ustria, 

 associated with grey quartz. Very small crystals are found im- 

 bedded in and alternating with layers of black wad in Bayreuth. 

 A variety much resembling the German ones, found in similar 

 repositories, occurs at the mine of Antonio Pereira near Villa 

 Ricca in Brazil, along with brown hematite and psilomelane, in 

 beds in clay-slate, produced according to Dr POHL'S account, 

 from the decomposition of sparry iron. 



Small granular pyrolusite occurs at Skidberget in the parish 

 of Lepand in Dalecarlia, Sweden. But the individuals are often 

 much smaller, and appear in the form of a black sooty substance. 

 Such are frequently found in the iron-mines of Raschau and 

 other places in Saxony, also at Flatten and other similar reposi- 

 tories in the north of Bohemia ; sometimes they include small 

 globules and reniform masses of red hematite, or red iron-ochre. 

 The same pulverulent oxide occurs also at Schladming in Sti- 



