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_900x900.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
_200x200.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
_900x900.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
_200x200.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
.jpg "Historic 'Australia' Boulder Opal Mineral Specimen")
LOT 2593
Historic 'Australia' Boulder Opal Mineral Specimen
1 1/2 in. (34.8 grams, 39 mm).
The matrix showing pale sky-blue opal, collection number 425, with an old James Walker label. [No Reserve]
ProvenanceAcquired on the UK mineral and fossil market, since 1970.
From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent.
Accompanied by an original historic index file card.
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AUCTIONS:
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LOT 2593
Historic 'Australia' Boulder Opal Mineral Specimen
Sold for (Inc. bp): £156
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Historic British Mineral Specimen Collection
Sold for (Inc. bp): £20
Comprising: volcanic ash from Borrowdale, Cumberland; hornblende from Sutherland; granite-aplite from Devon; and luxullianite; three with old labels. 2 kg total, 10.3-11.4 cm
Found at various sites in the UK. Ex Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Fossil Lituites on Matrix
Ordovician Period, circa 450 million years B.P.Sold for (Inc. bp): £98
Displaying planospirally coiled juvenile portion at the apex and a part of the long, expanding orthoconic adult section with a subdorsal siphuncle connecting the chambers. 204 grams, 99 mm
From China. Acquired at the Kidlington Mineral and Fossil Show, Oxfordshire, UK, in 2016. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Coloured Quartz Crystal Nodule
Sold for (Inc. bp): £7
An opened nodule lined with dyed pink quartz crystals. 93 grams total, 49 mm each
From a Cambridgeshire, UK, collection.
