97 



CRYSTALLIZED RED IRON ORE. 



the generic divisions pointed out by Hedwig, and by Dr. 

 Smith be followed ? Or are these divisions too difficult for a 

 beginner ? Out^ht not distinctions similar to those of Hither- 

 ingto be adopted, which are more obvious to a beginner? Is 

 not a good introduction to the cvyptogania class still wanted ? 

 How would such an introduction be received? and How 

 should it be conducted ? 



T. L. N. 



V. 



Analysis of the compact red Iron Ore in cubic Crystals from 

 Toeschnitz in Thuringia. By Mr. Buciiolz*. 



JOEING at Ilrnenau in June IJ^^Q, 1 had the pleasure of Red iron ore in 

 seeing my old friend, mine-counsellor Voigt, who showed [^^"^l'^ j-^^'^^^^ 

 me a mineialogical rarity lately discovered, a compact red ed 

 ore of iron crystallized in cubes. He presented me with a 

 specimen, in which the crystals were still on their gangne, 

 in order that I might analyse them : but on my remarking, 

 that the crystals when separated would be in too small 

 quantity, and might retain a little of the gangue, he gave 

 me some perfectly pure separate crystals, and communica- 

 ted to me the particulars of the situation where they were 

 found. 



This species of minerals is found at Toeschnitz in Thu- in Thuringia. 

 ringia. The gangue of the crystals is compact red iron Its gangue. 

 ore passing into a primitive argillaceous schist. The cut 

 in which they were found has been given up, because the 

 iron ore was too poor; and it is to be apprehended, that, 

 when this is once filled, mineralogifts will no longer be able 

 to procure it. 



It would be superfluous here to give a description of the Appearance. 

 compact red iron ore, which is to be found in all treatises 

 on mineralogy, and agrees with this mineral ; except that it 

 is in perfectly regular cubes, differing in size from that of a 



♦ Journal des Mines, vol. XXII, p. 433. 

 Vol. XXV.— Feb. 1810. H lentil 



