2. K 0 z low ski S., Par a c h 0 n i a k W. - Pro~
dukty wietrzeniabazalt6w w rejohie Lubania na Dolnym SlllSku. Acta geol. pol., 1960, nr 3.
3. K u t n i a r e . , K raj e w ski R. - Sprawoz~ danie .z badaii rud manganowych wykonanych w 1932 r. PIG Pos. nauk., 1933.
4. M e i s t erE. - Erlauterungen zur geologischen Karte von Preussen Blatt Tepliwoda. Berlin, 1932. 5. Mic h al e k Z. - Studium geochemiczne siarcz~
kowych mineral6w zelaza. PAN. Oddz. w Kra-kowie. Kom. Nauk Geol. Pr. geol. 1962.
6. 0 b e r c J. - Zmiany kierunk6w naCisk6w g6ro-tw6rczych w strefie granicznej SUdetOw Zachod~ nich i Wschodnich. Acta geol. pol. ,1'957, nr 1. 7. 0 b e r c J. - Geologia krystalinikum Wzg6rz
Strzeliiiskich. Studia geol. pol., 1960, vol. XX.
SUMMARY
Crystalline schists showing manganese-iron mi~
neralization have been encountered during the exploi~
tation of nephelinite deposits in the quarry "Jano~
wiczki" (Wroclaw district, 12 km south-west of Strze-11n). The schists also crop out within the Quaternary formations, in the form of a small lens. They belong
to the so-called series of crystalline schists found to occur east of the Niemcza zone. These are highly interesting mainly due to their special tectonic po-sition in relation to the Niemcza zone .and to the cry-stalline basement of the Strzelin Hills.
So far, no information has been available as con-cerns the ma,nganese-iron mineralization of these rocks in the area considered. The· position of the mica schists is interesting also owing to the fact that they are overlain with a Tertiary nephelinite effu-sive mass. The article also contains the results of the study carried out in the area discussed.
8. P i wow a r A." C i u k E. - Przyczyaek do znajomosci rud manganowych w p61nocnej c~sci ZagI~bia Dllbrowskiego. Roczn. Pol. Tow. Geol., 1936, t. XII.
9. Ram doh r P .. - Die Erzmineralien und Ihre Vergwachsungen. Akademie~Verlag. Berlin, 1000.
10. ,S c h n e i d e rho h n H. - Zloza rod. Wyd. Geo1.,
'l962. ,
11. ,S m u I i k 0 w ski K. - Wulkanity trzeciorz~do
we. Regionalna Geologia Polski, t. 3. Sudety,
1960,
z.
2. '.. 12. Tie t z e O. - Die kristallinen schiefer ostlich von Nimptsch. Jahrb. d. Preuss. Geol. L.-A. Bd. 36, t. 1. Berlin, 1919.
13. Tie t z e O. - Erlauterungen zur Geologischen Karte von Preussen Blatt Nimptsch. Berlin, 1919. 14. Wo 1 y ii ski I. S. - Mikroskopowe oznaczanie
minera16w kruszcowych. Wyd. Geol., 1958.
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