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Eisenkiesel Psm Fossil Bacteria

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RHT792971

Eisenkiesel Psm Fossil Bacteria

ex collection Peter Wittmann, ex Helmuth Hatton
Pseudomorph

Description Tabs

Description
Locality: 
Köster Quarry, Ambrock, Arnsberg, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.5 × 3.2 cm
Weight: 
46.00gr
Description

Glossy orange-brown/rust-colored eisenkiesel phantom crystals with inclusions of fossil fungi mycelia respectively archaea bacteria and tiny glossy black hematite crystals. The quartz crystals formed on fossil stromatolites built from bacteria and/or fungi mycelia. A worldwide singular geological phenomenon in the Sauerland area.. Here's an extract from a German publication: "Fossil fungi in iron stromatolites from Warstein (Rhenish Massif, Northwestern Germany) Zeitschrift Facies Verlag Springer Berlin / Heidelberg ISSN 0172-9179 (Print) 1612-4820 (Online) Heft Volume 7, Number 1 / Dezember 1982 DOI 10.1007/BF02537228 Seiten 237-259 Fossil iron stromatolites, formed by fungi, have been found near Warstein, W. Germany. The stromatolitic and massive ferruginous quartzes are always confined to karstic hollow molds of the Devonian "Massenkalk". The few occurrences show that these are chalcedony-quartz-silicifations of mainly ac-oriented, corrosively widened cracks. A mineralization temperature of about 120°C was found by microthermometrical measurements. Druses in ferruginous quartz sometimes carry clear, prismatic to pseudocubic quartzes embedding fungal mycelia. The fungal filaments are generally encrusted with goethite and appear in stromatolitic, massive and patch-like forms. An Oligocene/Miocene age is presumed ... " Newer texts suggest that the fossil inclusions are threads of archaea bacteria.

Color a bit different in nature - even better I'd say.

Mineral Data
What's on the rock

Eisenkiesel

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0

Seller Information

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