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Earth Science Institute of the Slovak Academy of Sciences

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Polish Geological Institute Institute of Geology - Academy of Sciences of the Czech Republic

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Veda, Publishing House of the Slovak Academy of Sciences

SPINEL-HORNBLENDE-ANTHOPHYLLITE (NEPHRITOID) NEOLITHIC AXES FROM WESTERN SLOVAKIA

• Geologica Carpathica
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• Volume 48 No.2 / April 1997

Published: Apr 1997

Pages: 137 - 140

Authors: DUSAN HOVORKA, LUDMILA ILLASOVA, SERGEY KORIKOVSKY

Abstract: Among artifacts from several localities/sites in western Slovakia (the Male Karpaty Mts. and the Danube Upland (Podunajska pahorkatina) those composed of green Al-rich spinel, hornblende and anthophyllite are characteristic. Other minerals (olivine, clinozoisite, muscovite, ilmenite, magnetite and sphene) are present in accessory amounts. The stones bear several characteristics of nephrites. In paper we use the common term „nephritoids“ for various varieties of the discussed rocks. Primary occurrences of these Al-rich spinel-hornblende-anthophyllite rocks are not yet known. On the basis of the predominance of hornblende and anthophyllite, the rocks under consideration are thought to be products of medium-temperature metamorphism of spinel bearing orthopyroxene-clinopyroxene rocks (ferroultramafics) under static conditions and high P/H₂O.

Keywords: Neolithic, axes, (Al-rich) spinel-hornblende-anthophyllite (nephritoid) rocks

Volume 48 no. 2 / April 1997

• ROMAN AUBRECHT

  INDICATIONS OF THE MIDDLE JURASSIC EMERGENCE IN THE CZORSZTYN UNIT (PIENINY KLIPPEN BELT, WESTERN CARPATHIANS)

• MILAN MISIK, VLADIMIR SUCHA

  CHLORITE AND CHLORITE-HEMATITE ONCOIDS FROM THE JURASSIC LIMESTONES OF THE WESTERN CARPATHIANS, SLOVAKIA

• DUSAN PLASIENKA

  CRETACEOUS TECTONOCHRONOLOGY OF THE CENTRAL WESTERN CARPATHIANS, SLOVAKIA

• JAN SPISIAK, DUSAN HOVORKA

  PETROLOGY OF THE WESTERN CARPATHIANS CRETACEOUS PRIMITIVE ALKALINE VOLCANICS

• AIDA S. ANDREYEVA-GRIGOROVICH, YAROSLAV O. KULCHYTSKY, ANTONINA D. GRUZMAN, PETRO YU. LOZYNYAK, MARIAN I. PETRASHKEVICH, LUDMYLA O. PORTNYAGINA, ANTONINA V. IVANINA, SERGEY E. SMIRNOV, NATALIA A. TROFIMOVICH, NATALIA A. SAVITSKAYA, NINA J. SHVAREVA

  REGIONAL STRATIGRAPHIC SCHEME OF NEOGENE FORMATIONS OF THE CENTRAL PARATETHYS IN THE UKRAINE

• DUSAN HOVORKA, LUDMILA ILLASOVA, SERGEY KORIKOVSKY

  SPINEL-HORNBLENDE-ANTHOPHYLLITE (NEPHRITOID) NEOLITHIC AXES FROM WESTERN SLOVAKIA