Horváth Géza (szerk.): A Magyar Természettudományi Múzeum évkönyve 22. (Budapest 1925)
Koch, S.: Újabb előfordulású wolframit-kristályok Felsőbányáról
146 Dr. KOCH SÁJMDOR b : f 010 : OU 49°01 ' 49°06'30" b : e 010 : 112 = 69°24 ' 69 o 24»40" 6 : : o 010: îll — 59°02' 59°01'36" y • : k 102 : : 502 = 97°00' 97°07' t : : k Í02 : 502 — 41°49' 41°45' Ï : k 403 : 502 = 14°41' 14°47' co : co 111 : 111 61°31' 61°32'16" co : f 111 : OU = 38°14' 38°16'50" 0 : f 121 : OU 32°58' 33°02'45" f' e OU : 112 30°48' 30°45'40" e : 0 112 : 111 19°34' 19°34'09" o : k 111 : 502 = 37047» 37°50'02" e : t Ï12 : Ï02 = 21°08' 21°02'56" * * * It was the late Prof. KRENNER who first found wolframite at Felsőbánya (Hungary), and rendered account of his research in the Hungarian Academy of Science in 1875. The wolframite was found in the „Leves" mine, their crystals were like, according to KRENNER, a one side sharpened chisel, were four to twelf mm. long by one mm. breadth, and 1 to 2 mm. thick. On the crystals he found altogether twelve forms, the poorest in faces were built up by three, and the richest by nine forms. The Mineralogical Department of the Hungarian National Museum has some beautiful specimens from the above mentioned locality among them those described by KRENNER, as well as others of different forms collected latter. The latter specimens were found in 1908 and afterher at the East mine XL level, their crystals were well developed, and associated with bright chalcopyrite crystals and dolomite. In 1924 when exploring Dr. B. FÜLÖPP'S fine private collection, I was struck by a specimen, lately brought to light, on which — grown on quartz and associated with white calcit-rhombohedrons — fine, small, many faced wolframite crystals were sitting, the largest of which was 272 cm. long. Mr. FÜLÖPP was kind enough to give me two small crystals for examination. My present investigations are based on the wolframite associated with chalcopyrite belonging to the Hungarian National Museum and the two crystals received from Mr. FÜLÖPP. The wolframite crystals associated with chalcopyrite are 1 to 22 mm. large, chisel-shaped and have generally few faces. They are formed, mostly, by the following four faces: a {lOOi, b {010;, y {102], k {502}. The crystals are stretched in the line of the main axis; a and b
