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Barite
york24
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Polished cross-section of brown, stellate barite stalactite showing
central void.
Small cabinet - 70x50x15mm(2.8"x2")
Primrose level, Arkengarthdale
North Yorkshire.
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Barite
york25
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Attractive dendritic sprays of barite crystals forming near complete
ball without matrix.
Miniature - 55x35x30mm(2.2"x1.4")
Brandy Bottle Incline
Old Gang Mines
Swaledale, North Yorkshire.
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Barite
york26
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Good example of Swaledale barite with lustrous, translucent interlocking
blades of barite. At some time past probably dissolved off a calcite
matrix.
Small cabinet - 95x50x40mm(3.8"x2")
Dam Rigg level, Arkengarthdale
Swaledale, North Yorkshire.
£25
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Calcite
york27 |
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Unusual beach location. Straw coloured rhombs of calcite (largest 5mm),
with a dusting of translucent second generation calcite of different
habit.
Small cabinet - 60x60x30mm(2.4"x2.4")
Hilston Beach, Withensea
East Yorkshire.
£12
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Aurichalcite
york28 |
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Vein matrix with small sprays of well formed aurichalcite and hemimorphite
on both upper and lower faces. Unusual location.
Small cabinet - 75x40x25mm(3"x1.6")
Whitaside mine, Swaledale
North Yorkshire
£15
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Fluorite
york29 |
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Gemmy interlocking cubes of lemon-yellow fluorite to 6mm on altered
limestone
Small cabinet - 75x50x50mm(3"x2")
Great Sleddale mine, Keld
Swaledale, North Yorkshire.
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Witherite
york30
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Witherite in small amounts is not particularly rare in Swaledale and
this specimen is from probably the best location. It has a number of
well formed crystals of pseudo-hexagonal pyramidal form, the largest
approx. 10mm long.
Miniature - 50x45x35mm(2"x1.8")
Danby Level, Arkengarthdale. N.Yorkshire
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Hilgardite
& Boracite
york31
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A rich specimen of massive hilgardite with a crystallized central cavity
surrounded by a layer of turquoise boracite. Growing in the cavity are
a further group of boracite crystals.
Small Cabinet - 110x75x40(4.4"x3")
Boulby mine, Boulby, Nr. Loftus, Cleveland.
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Cerussite
york32 |
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Numerous lustrous, bladed cerussite crystals to 8mm on micro crystaline
barite.
Small cabinet- 75x50x35mm(3"x2")
Brandy Bottle Incline, Old Gang Mines
Swaledale, North Yorkshire
£22
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Cerussite
york33 |
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Finely crystallized snow-white cerussite blades (to 6mm) set off against
earlier brown micro barite crystals.
Large miniature - 50x40x30mm(2"x1.6")
Brandy Bottle Incline, Old Gang Mines
Swaledale, North Yorkshire.
£18
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Boracite
york34 |
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Sold
Individual crystals and spheres to about 7mm of boracite formed over
a massive boracite matrix. Lighter colour in daylight
Small cabinet - 75x60x50mm(3"x2.6")
Boulby mine, Boulby,
Nr. Loftus, Cleveland.
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Gearksutite with Ktenasite
york35
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Areas of blue green ktenasite (hydrated copper zinc sulfate hydroxide)
with an area of gearksutite in small white spheres
Small cabinet - 60x60x40mm(2.4"x2.4")
Hard Level, Old Gang mines,
Swaledale, North Yorkshire.
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Boracite
york36 |
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Individual boracite crystals aggregating into gemmy spheres to 3mm.
Lighter colour in daylight.
Large thumbnail - 45x30x20mm(1.8"x1.2")
Boulby mine, Boulby,
Nr. Loftus, Cleveland.
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Anglesite
on fluorite
york37 |
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Numerous well formed anglesite crystals perched on clear cubes of fluorite
and massive galena.
Miniature - 40x30x25mm(1.6"x1.2")
Coldstones Quarry
Pateley Bridge, North Yorkshire.
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Strontianite
york38
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Divergent spray of acicular strontianite crystals.
Thumbnail - 30x22x40mm(1.2"x0.9")
Hard Level, Old Gang mines
Swaledale, North Yorkshire.
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Azurite
york39 |
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Sold
Azurite is quite uncommon in the North of England but last year this
remote mine produced some of the best yet found. The specimen has crusts
and areas of small crystals on fluorite with a little malachite.
Small cabinet - 65x45x20mm(2.6"x1.8")
Great Sleddale mine, Keld
Swaledale, North Yorkshire.
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Malachite
york40 |
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Sold
Cavity in fluorite/iron rich limestone matrix with delicate tufts and
sprays of malachite.
Small cabinet - 65x45x35mm(2.6"x1.8")
Great Sleddale mine, Keld
Swaledale, North Yorkshire
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Azurite
york41 |
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Sold
Choice small specimen with areas of small but well formed azurite crystals
on lemon coloured fluorite.
Miniature - 35x35x20mm(1.4"x1.4")
Great Sleddale mine, Keld.
Swaledale, North Yorkshire
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Barite
york42
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Sold
Aesthetic display specimen of sharp barite crystals to 20mm. Slight
damage to back of one crystal but otherwise perfect.
Small cabinet - 80x75x60mm(3.2"x3")
Dam Rigg mine, Arkengarthdale, Swaledale, North Yorkshire
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Cerussite
& Fluorite
york43 |
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12mm twinned cerussite crystal with other cerussites on a bed of crystalline
fluorite and etched galena.
Small cabinet - 80x70x30mm(3.2"x2.8")
Coldstones Quarry
Pateley Bridge, North Yorkshire.
£18
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Boracite
york44 |
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Choice specimen for the locality with a core of orange-red massive and
crystalline hilgardite partially covered with areas of blue boracite.
Small cabinet - 95x50x30mm(3.8"x2.0")
Boulby mine, Boulby,
Nr Loftus, Cleveland.
£120
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Barite
york45
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Reserved
Polished section of barite nodule ("Yorkshire Oakstone"),
showing growth patterns. As featured in article on Barras mine in the
UKJMM No.27
Small cabinet - 85x60x15mm
Barras End Mine, Gunnerside
Swaledale, North Yorkshire
£18
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Aurichalcite
york46 |
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Sprays of acicular turquoise crystals formed in cavities
in brown calcite
small cabinet - 70x60x35mm
Wet Grooves mine
Asygarth, Wensleydale
North Yorkshire
£18
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