Mining/Geology

Australian Mineral Specimen – Gypsum Selenite with Copper

A very good example of gypsum in selenite form with even crystals of 5mm nicely impregnated with copper salts giving a soft green hue.

Very good example from Pernatty Lagoon, Stuart Shelf South Australia.

Nice crystals with even copper tone

$40.00

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Australian Mineral Specimen – Tasmanian Crocoite

The mineral emblem of Tasmania the rare and beautiful Crocoite.

A sparkling example with large dense crystals of a very even strong colour. A super example. Glued down and cased to preserve its beauty

Get some Crocoite in Your Life!!

$90.00

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Australian Mineral Specimen – Prehnite – Mullaley

A nice example of the mineral Prehnite – Calcium Aluminium Silicate [Ca2Al(AlSi3O10)(OH)2] in a botryoidal (grape like) formation. With an even green colouring.

From Mullaley NSW

Nice example of the botryoidal form

$40.00

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William Bragg – Nobel Laureate – Transactions and Proceedings Royal Society of South Australia Vol XXX – 1906

A good copy in original card cover 373 pages after preliminaries 12 interesting plates with 12 figures in the etc.

Another historically important edition with three papers by William Bragg. First, on the ionisation of various gases by the alpha particles of radium. Secondly, the alpha particles of Uranium and Thorium. And the third, an extension of the work carried out in the first with a plate showing the construction of the ionisation chamber. Bragg also gets involved in reporting the discovery of radium at Moonta Mines.

Also of special interest are two paper by Mawson. Mineralogical notes – fetid feldspar and quartz from Umberatana and atacamite from Bimbowrie. On certain new mineral species associated with carnotite in the radio-active ore body near Olary.

Leading work by Bragg at Adelaide with Mawson

$120.00

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Microscopical Mounts and Mounters – Brian Bracegirdle

This is the Bible as far as the world of collectors of prepared microscope slides is concerned. For the uninitiated, this is a wonderful pursuit and Brian Bracegirdle (1933 – 2105) was a genius putting this book together. No similar reference exists and it is highly sought after by collectors of scientific historicals.

Dr Bracegirdle was responsible for receiving the transfer of the Welcome Medical Museum Exhibits to the Science Museum in South Kensington, a formidable achievement. He was a strong personality, a hard taskmaster and like port … his obituary on the Science Museum website is well worth the read.

This book published in 1998 with the support of the esteemed Quekett Club. By this time, Brian was retired and living in Cheltenham. 225 pages after preliminaries including 60 full page plates of photographs of slide examples by many of the distinguished makers listed and described at the front.

It should be the ambition of all slide collectors to have at least one good example of every slide mounter in Bracegirdle. Voyager has quite a few and still searching.

No better guide has been or will be produced.

Now very hard to find and … who will compile another one?

$170.00

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Museum Quality Fossil Bowfin Fish from the Messel Pits, Germany

Very nice large extinct form of Bowfin Fish, Cyclurus kehreri. From the Middle Eocene (Geisealtalain) period – 47 Million Years Old.

These fossils are found within the bituminous oil shales that occur near the village of Messel, Darmstadt, Germany. The fossils are removed from the shale using a technique called reverse transfer preparation, where the fossil is mounted onto a resin plate and the destructive oils shale is then removed leaving the fossil on the resin plate. This is the only way for them to be preserved and the method is used by leading authorities.

Size of fish 26cm by 7cm, overall mount 36cm by 15cm.

The Fish has a number of living relatives such as the mudfish, mud pike, dogfish, griddle etc. and is also related to the gars.

An extremely rare and sought after fossil

$120.00

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Australian Mineral Specimen – Gypsum Selenite with Copper

Australian Mineral Specimen – Tasmanian Crocoite

Australian Mineral Specimen – Prehnite – Mullaley

William Bragg – Nobel Laureate – Transactions and Proceedings Royal Society of South Australia Vol XXX – 1906

Microscopical Mounts and Mounters – Brian Bracegirdle

Museum Quality Fossil Bowfin Fish from the Messel Pits, Germany

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