Pyritized bauxites from Minjera, Istria, Croatia

Scientific paper - Original scientific paper

• Author: Boris Šinkovec
• Author: Krešimir Sakač; MBZ: 64841
• Author: Goran Durn
• Author's institution: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract (english)

Pyritized bauxite was exploited in the valley of Mirna river in Istria already 400 years ago. It was used as a raw material for production of vitriol and alum. The pyritized bauxite contains both pyrite and marcasite. The conditions of their formation are interpreted in terms of the pH of the micro-environment and the concentration of sulfur and iron. Two phases of pyritization of bauxite have been recognized. Sulphur from the First phase of pyritization originated from organic matter of hangingwall sediments, while during the second phase sulfur mainly originated from the sea water. Pyritization is in some places accompained by diasporization

• Keywords (english): pyritized bauxite; diaspore; Paleogene; old bauxite mining; Minjera; Istria
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Natura Croatica : Periodicum Musei Historiae Naturalis Croatici
• Numbering: vol. 3, no. 1, pp. 41-65
• p-ISSN: 1330-0520
• e-ISSN: 1848-7386
• URN:NBN: urn:nbn:hr:169:105182
• Publication: 1994
• Type of resource: Text
• Access conditions: Open access
• Created on: 2020-04-06 17:37:25