TYG41XXX: Druse formed by Manganite, with a geode in which crystals of the Manganite itself stand out, with prismatic habit, parallel growths, very lustrous, dark gray in color and with silvery reflections. The specimen as a whole is accompanied by fine lamellar Calcite crystals, of spheroidal habit, crowning a group of Manganite crystals.

The area of Bridge of Don, a suburb of Aberdeen, is underlain by Devonian Old Red Sandstone sandstones and conglomerates, locally covered by Quaternary glacial deposits. Along the River Don, secondary manganese mineralization, including Manganite, has been reported, related to fractures and alteration zones within the sedimentary sequence.
Bridge of Don (suburb of Aberdeen), Grampian  Scotland / United Kingdom

Specimen size: 4.6 × 3.4 × 2.9 cm = 1.81” × 1.34” × 1.14”

Main crystal size: 0.3 × 0.1 cm = 0.12” × 0.04”

SM65TAF: Group of tabular Heulandite crystals with very sharp crystal forms, transparent, lustrous and colorless.
A difficult locality from which to obtain specimens.
Sgurr nam Boc, Glen Brittle, Isle of Skye, Inner Hebrides, Highlands  Scotland / United Kingdom

Specimen size: 3.7 × 2.9 × 3 cm = 1.46” × 1.14” × 1.18”

Main crystal size: 1 × 0.3 cm = 0.39” × 0.12”

BDD76AN3: Very sharp crystals of Fluorapophyllite-(K) of quite exceptional size for the deposit. They have a pseudocubic habit and are lustrous, white and on a basalt matrix partially covered by spheroidal growths of Gyrolite. An Scottish classic, hard to come by today.
Talisker Bay, Talisker, Carbost, Minginish, Isle of Skye, Inner Hebrides, Highlands  Scotland / United Kingdom

Specimen size: 5.1 × 4.7 × 2.8 cm = 2.01” × 1.85” × 1.10”

Main crystal size: 1.1 × 1 cm = 0.43” × 0.39”

TXE16AP7: Botryoidal growth of Smithsonite with a uniform white color, on matrix. A true antiquity from a very classic English locality.
The specimen comes from the old collection of Robert-Auguste Touchon and on the back has an attached old handwritten label with details of the specimen.
Wanlockhead, Dumfries and Galloway, Kirkcudbrightshire  Scotland / United Kingdom

Specimen size: 6 × 4.3 × 2.5 cm = 2.36” × 1.69” × 0.98”

NQ76AH0: Aggregate, very aerial and on matrix, of snowy white Harmotome crystals with very well defined faces and edges.
Strontian, Lochaber, Argyll and Butte  Scotland / United Kingdom

Specimen size: 3.3 × 3.3 × 2.3 cm = 1.30” × 1.30” × 0.91”

Main crystal size: 1.1 × 1.1 cm = 0.43” × 0.43”

EK97AA5: An aggregate, on matrix, of rhombohedral Calcite crystals with creamy color and with curious echeloned growths making overall for a pyramidal shape. Like so many specimens in this collection, this one is of great quality for the locality.
Strontian, Lochaber, Argyll and Butte  Scotland / United Kingdom

Specimen size: 6.9 × 3.8 × 2.8 cm = 2.72” × 1.50” × 1.10”

Main crystal size: 1.3 × 1.3 cm = 0.51” × 0.51”

SA87AC0: The sample, from the type locality, has divergent sprays of crystals with a clear green color that are partially coated by Calcite and on matrix.
Strontian, Lochaber, Argyll and Butte  Scotland / United Kingdom

Specimen size: 11 × 8.2 × 4 cm = 4.33” × 3.23” × 1.57”

TPQ96XXX: Very sharp and aerial platy crystals of Baryte, intergrown with each other, whitish and very slightly pink, some of them partially coated by Calcite crystals.
The specimen, which was collected by Ian Jones, comes from the Bill & Diana Dameron collection.

Taff’s Well Quarry lies in southern Wales, within the geological setting of the South Wales Coalfield. Here, thick Carboniferous limestone and sandstone packages have been quarried for construction materials. Secondary mineralization, including Calcite and Baryte, occurs mainly in fractures and cavities formed by low-temperature hydrothermal processes linked to the late tectonic evolution of the basin.
Taff's Well Quarry, Cardiff Municipality, Cardiff  Wales / United Kingdom

Specimen size: 7.2 × 5.4 × 3.5 cm = 2.83” × 2.13” × 1.38”

Main crystal size: 2 × 0.6 cm = 0.79” × 0.24”

TPT96XXX: Group of very thin, bladed crystals of Barite, snow-white in color and very lustrous, forming interlaced bundles, partially coated by Calcite, and on a rock matrix covered with light brown Dolomite crystals.
The specimen comes from the collections of Ian Jones and later from Bill & Diana Dameron.

The Machen Quarry lies on the southern margin of the South Wales Coalfield, where the thick Carboniferous sedimentary sequences (sandstones, shales and coal-bearing layers) are affected by late faulting and fracturing. These structures host minor secondary mineralization and alteration zones that produce well-formed crystals of Calcite, Baryte and other minerals occurring in cavities within sedimentary rocks.
Machen Quarry, Machen, Caerphilly, Caerphilly County  Wales / United Kingdom

Specimen size: 7.5 × 7.0 × 5.0 cm = 2.95” × 2.76” × 1.97”

TMP96XXX: Rhombic Calcite crystals, one of them clearly dominant and doubly terminated, with a very aerial disposition, color zones that are darker on the pinacoidal terminations, on matrix and with a very intense and uniform yellowish-orange color, due to inclusions of iron oxides.

Taff’s Well Quarry lies in southern Wales, within the geological setting of the South Wales Coalfield. Here, thick Carboniferous limestone and sandstone packages have been quarried for construction materials. secondary mineralization, including Calcite and Baryte, occurs mainly in fractures and cavities formed by low-temperature hydrothermal processes linked to the late tectonic evolution of the basin.
Taff's Well Quarry, Cardiff Municipality, Cardiff  Wales / United Kingdom

Specimen size: 8.4 × 6.6 × 4.1 cm = 3.31” × 2.60” × 1.61”

Main crystal size: 4 × 3 cm = 1.57” × 1.18”

NV86AL5: Spheroidal aggregates of small deep green and uniform Pyromorphite crystals, on matrix, with small yellow-brown lamellar crystals of Wulfenite. The specimen comes from one of the classic European localities for the species.
Bwlch Glas Mine, Cyneiniog Valley, Talybont, Ceulanymaesmawr, Ceredigion  Wales / United Kingdom

Specimen size: 7.5 × 4.5 × 1.7 cm = 2.95” × 1.77” × 0.67”

TFF87XXX: Druse formed by Calcite crystals of a marked reddish-orange color, deeper on the edges of the crystals, with the centers of the faces of the cubes much more translucent. Twinned and with good luster, they are on a matrix with limonite remnants.

Dyserth Quarry exposes Lower Carboniferous limestones and dolomites forming part of the northern carbonate belt of the Clwydian Range. These units, affected by fracturing and low-temperature hydrothermal circulation, host small fissure- and cavity-type mineralisation with secondary zinc, iron, and copper species, typical of limestone quarries across northern Wales.
Dyserth Quarry, Dyserth, Denbighshire  Wales / United Kingdom

Specimen size: 9.1 × 7.4 × 5.2 cm = 3.58” × 2.91” × 2.05”