Abstract

[Excerpt from first page] The replacement of the calcareous matter in fossils Precious Opal appears to be a fact but little commented on by Authors. The search for opal in the Upper Cretaceous at the White Cliffs Opal-field on Momba Holding, about sixty-five miles north-north- west of Wilcannia, in Co. Yungnulgra, has been signalised by the discovery of many beautiful examples of the entire conversion of the shelly envelopes of Pelecypoda and Gasteropoda, the internal, shells of Belemnites, and Reptilian remains, into Precious Opal by a process of replacement. Many of these are in the Collection of the Geological Survey of N. S. Wales, others have been lent to the same, and through the courtesy of Mr. E. F. Pittman, Government Geologist, I have been permitted to examine them. [etc.]

 
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Bibliographic Data

Short Form
Etheridge, 1897, Rec. Aust. Mus. 3(2): 19–29
Author
R. Etheridge
Year
1897
Title
An Australian Sauropterygian (Cimoliosaurus), converted into precious opal
Serial Title
Records of the Australian Museum
Volume
3
Issue
2
Start Page
19
End Page
29
DOI
10.3853/j.0067-1975.3.1897.1123
Language
English
Plates
plates v–vii
Date Published
05 August 1897
Cover Date
05 August 1897
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Digitized
01 June 2009
Reference Number
1123
EndNote
/Uploads/Journals/16980/1123.enw
Title Page
/Uploads/Journals/16980/1123.pdf
File size: 169kB
Complete Work
/Uploads/Journals/16980/1123_complete.pdf
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