... chert from the Hainichen clay pit ...

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Brown Dadoxylon fragments as they are known from many locations can be found easily. Some show well preserved tissue, and a few are more coloured. Many are recognized as wood only by their shape as their tissue is replaced by coarse-grained quartz. The piece of chert seen here is not affected in this way. Other chert samples show crystalline quartz and agate-like bands. Fossil inclusions, if there are any, are poorly preserved. Differential degrees of silicification may cause trouble in cutting and polishing.

No silicified remains of lycopods, ferns, pteridosperms, or calamites had become known from this location, which gives the latest find shown here particular importance. Fern pinnules with sporangia, frond stalks, and Psaronius trunk fragments are seen in good preservation, thus resembling well-preserved samples from Doehlen basin. A thorough investigation of this find with repect to its origin and fossil content has not yet been done.

The story of this particular find is worth being told: found in 2000 as two parts of an already smashed big chunk, taken home, misinterpreted as petrified wood of little interest, stored in the garden on a flower bed, recognized as something very special in 2002 thanks to the additional knowledge gained in the meantime.


Hainichen clay pit

P151Ho, chert with Psaronius


P152Ho, chert with plant parts