Abstract

1.Precious opal from White Cliffs, NSW.

On examining a cut and polished specimen of a fossil-bearing ferruginous sandstone boulder from White Cliffs, N .S. Wales, I was struck by the appearance of the precious opal which had replaced the carbonate of lime of the shells. The rock is permeated with the opal, and particularly when polished has a very beautiful appearance. The minute surfaces in the interior of the opal which produce the play of color; when viewed with a lens, appear to be quite flat and terminated by perfectly straight edges often parallel.

 
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Bibliographic Data

Short Form
Cooksey, 1896, Rec. Aust. Mus. 2(7): 111–112
Author
T. Cooksey
Year
1896
Title
Mineralogical notes. 1. Precious opal from White Cliffs, N.S.W. 2. Basic sulphate of iron from Mount Morgan
Serial Title
Records of the Australian Museum
Volume
2
Issue
7
Start Page
111
End Page
112
DOI
10.3853/j.0067-1975.2.1896.1213
Language
English
Date Published
31 January 1896
Cover Date
31 January 1896
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Digitized
11 September 2009
Reference Number
1213
EndNote
/Uploads/Journals/16685/1213.enw
Title Page
/Uploads/Journals/16685/1213.pdf
File size: 108kB
Complete Work
/Uploads/Journals/16685/1213_complete.pdf
File size: 319kB