Abstract
This paper discusses the occurrence of silicified tree trunks and stumps in the Boehlen brown coal field. The trees, mainly Taxodium and Sequoia 25 million years old, are located within the top brown coal seam of the deposit and present a major obstacle to excavator operation, together with other forms of so-called 'brown coal quartzite'. The quartz of the silicified trees occurs as opal, cryptocrystalline quartz and low temperature quartz. The separate removal and disposal of this wood as well as efforts made to use selected wood as raw material are briefly summarized. Various products for interior house decoration have been manufactured from the wood. (4 refs.)
Citation Formats
Bellmann, H J, Schuettler, J, and Jakisch, E.
Utilization of silicifed Tertiary wood as raw material for the natural stone industry. [German Democratic Republic].
Germany: N. p.,
1981.
Web.
Bellmann, H J, Schuettler, J, & Jakisch, E.
Utilization of silicifed Tertiary wood as raw material for the natural stone industry. [German Democratic Republic].
Germany.
Bellmann, H J, Schuettler, J, and Jakisch, E.
1981.
"Utilization of silicifed Tertiary wood as raw material for the natural stone industry. [German Democratic Republic]."
Germany.
@misc{etde_5149395,
title = {Utilization of silicifed Tertiary wood as raw material for the natural stone industry. [German Democratic Republic]}
author = {Bellmann, H J, Schuettler, J, and Jakisch, E}
abstractNote = {This paper discusses the occurrence of silicified tree trunks and stumps in the Boehlen brown coal field. The trees, mainly Taxodium and Sequoia 25 million years old, are located within the top brown coal seam of the deposit and present a major obstacle to excavator operation, together with other forms of so-called 'brown coal quartzite'. The quartz of the silicified trees occurs as opal, cryptocrystalline quartz and low temperature quartz. The separate removal and disposal of this wood as well as efforts made to use selected wood as raw material are briefly summarized. Various products for interior house decoration have been manufactured from the wood. (4 refs.)}
journal = []
volume = {27:11}
journal type = {AC}
place = {Germany}
year = {1981}
month = {Nov}
}
title = {Utilization of silicifed Tertiary wood as raw material for the natural stone industry. [German Democratic Republic]}
author = {Bellmann, H J, Schuettler, J, and Jakisch, E}
abstractNote = {This paper discusses the occurrence of silicified tree trunks and stumps in the Boehlen brown coal field. The trees, mainly Taxodium and Sequoia 25 million years old, are located within the top brown coal seam of the deposit and present a major obstacle to excavator operation, together with other forms of so-called 'brown coal quartzite'. The quartz of the silicified trees occurs as opal, cryptocrystalline quartz and low temperature quartz. The separate removal and disposal of this wood as well as efforts made to use selected wood as raw material are briefly summarized. Various products for interior house decoration have been manufactured from the wood. (4 refs.)}
journal = []
volume = {27:11}
journal type = {AC}
place = {Germany}
year = {1981}
month = {Nov}
}