150 
VICTOR Z SI VN Y 
Entrusted by the Mineralogical-Palaentological. Department of the 
Hungarian National Museum, I was collecting minerals in the environs of 
Recsk (county Heyes, Hungary) in the months of July, August and 
September 1922. After a preliminary examination of the collected: material 
it became obvious that ,my work of collecting which was effected in 
Mátrabánya, situated on the southern slopes of Mount Lahocza, belonging 
to the community Recsk, and especially in the adit,.of „Középső-György“ 
(Middle George) and in its neighbourhood, has furnished new data to the 
knowledge of the minerals of Recsk. As it will take a longer time until 
the crystallographieal and chemical investigation of the.material will have 
been completed, I wish to fix down a dew observations already now in 
these notes. 
In the course of trial-investigations recently effected ,m the deposits 
of ore of tbe Mátra mountains, an exploring opening was run in western 
direction, in * a . depth of 7 l /T mètres below the level of the „Középsö- 
György“ adit, from the rollingshaft of 28 mètres depth, connecting the 
„Középső-György“ adit with the „Katalin“ (Catherine) adit situated below 
it. This operation failed, from the point of view of mining, to satisfy the hopes 
attached to, but it furnished, nevertheless, most interesting mineralogica! 
data. On the pieces originating from this exploring opening I was able to 
observe the presence of Wheyoellite^ Native-Sulplmr and crystallised 
Dolomite , which minerals were not known up to now from Recsk. Among 
these Whewellite is a. new mineral not only to Recsk, but also to Hungary- 
From the „Középső-György“ adit I was able to collect, apart from 
Dolomite ; also,crystallised Enargite, which is not mentioned up to now 
in literature from this locality., as well as crystals of Pyrite and Quartz r 
Avhich are not yet described in detail from Recsk. 
The crystalline and crystallised Whewellite, associated with Sulphur 
is to be found partly in a part of greatly altered Biotite-amphibole- 
andesite sprinkled with small crystals of Pyrite which in a veined extent 
contains sulphurous ores and is strongly, respectively totally, silificated, 
but chiefly in its cavities, covered with Dolomite forming aggregates of 
imperfect crystals, often of a globular or cowliflo wer like shape, — and 
partly in the cavities of macro-crystalline Dolomite forming veines in a 
conglomeratelike rock not yet examined and also with disseminated small 
Pyrite crystals, grown amid nice crystals of Dolomite. 
The crystals of Whewellite are prismatic in the direction of the 
principal axis and mostly form groups resulted by irregular growth; their 
parallel growth is very rare, and I was able to observe one twin crystal 
