Australian Museum Journal Mineralogical notes. 1. Precious opal from White Cliffs, N.S.W. 2. Basic sulphate of iron from Mount Morgan

Shortform:
Cooksey, 1896, Rec. Aust. Mus. 2(7): 111–112
Author(s):
Cooksey, T.
Year published:
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 package:
EndNote file
Title page:
Title page (108kb PDF)
Complete work:
Complete work (319kb PDF)

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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