Author Topic: Conchoidal fracture (bruise) on Greta Vase  (Read 3566 times)

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Offline paradisetrader

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Conchoidal fracture (bruise) on Greta Vase
« Reply #20 on: November 18, 2005, 07:23:08 PM »
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conchoidal fracture

Thank you Adam
Yes that seems to be it alright
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A conchoidal fracture has curved lines, rather like a sea-shell (which is where the word "conchoidal" comes from). Obsidian has conchoidal fractures, as does ordinary glass.
http://www.gwydir.demon.co.uk/jo/minerals/obsidian.htm

I'm glad it translates easily into German for you Pamela  :)
Pete


Offline pamela

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    • Pressed Glass 1840-1950
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Conchoidal fracture (bruise) on Greta Vase
« Reply #21 on: November 18, 2005, 08:55:23 PM »
aa:  :D
Peter:  :D
obsidian is glass 8)
Pamela
http://www.pressglas-pavillon.de
http://www.glas-musterbuch.de

Experience teaches that anyone who begins to collect in any field can feel a change in his soul. He becomes a joyful man filled with a deeper empathy, and a more open understanding of worldly things moves his soul.    (Alfred Lichtwark 1852 1914)


 

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