Precious metal
Gold
Gravity concentrate and dore from alluvial and hard rock workings. Recovered without mercury.
By the kilogram, on assay
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Our minerals
Twenty four mineral product lines.
Metallic ores and energy minerals, industrial minerals, and gemstones and collector minerals. Availability follows the mining programme.
Metallic ores & energy minerals (5)
Industrial & salt minerals (4)
Gemstones & collector minerals (15)
How we sell
Sales terms.
Ores and industrial minerals are sold by the tonne against an independent assay, with weight and quality certificates per lot. Gemstone and specimen material is sold by the piece or by parcel, measured, photographed and sealed before dispatch.
Spot sales and term supply are both available. For term supply we agree a monthly tonnage, a grade window and a price mechanism before the first shipment.
Goshenite, gemstone division
Group 01
Metallic ores and energy minerals.
Sold by tonnage on assay, with weight and quality certificates. Bulk or jumbo bag shipment through Lagos and Onne.
Iron ore
Iron Ore
Haematite and magnetite ore for steel and cement feed, reported on Fe, silica, alumina, sulphur and phosphorus.
Lump or fines, bulk tonnage
Lead ore
Lead Ore
Galena based concentrate, usually carrying a silver credit. Graded on lead content with the full impurity profile.
Concentrate, jumbo bags
Zinc ore
Zinc Ore
Sphalerite based concentrate, mined alongside our lead production and graded on zinc content.
Concentrate, jumbo bags
Energy mineral
Coal
Thermal coal for industrial boilers and cement kilns, supplied with calorific value, ash, moisture, volatiles and sulphur.
Sized lump or fines, bulk
Group 02
Industrial and salt minerals.
Crushed, screened and supplied bagged or in bulk, by the tonne, against an assay.
Tungsten ore
Ferberite
Iron rich end member of the wolframite series and an important tungsten ore. Black, heavy, high specific gravity.
Concentrate, by the tonne
Industrial mineral
Zeolite
Hydrated aluminosilicates with an open framework structure, used in water treatment, animal feed, soil conditioning and filtration.
Sized and bagged, or bulk
Sulphate mineral
Kalinite
Potassium alum, a hydrated potassium aluminium sulphate used in water clarification, dyeing and tanning.
Bagged, by the tonne
Potash mineral
Carnallite
Hydrated potassium magnesium chloride, normally reddish, and a source of potash and magnesium compounds.
Bulk or bagged, by the tonne
Group 03
Gemstones and collector minerals.
Sold by the piece or by small parcel. Hand sorted, measured, photographed and sealed, with airfreight available from Maiduguri or Abuja.
Beryl group
Goshenite
The colourless variety of beryl. Clean material is faceted, included material is sold as specimen.
Rough or preformed, by the gram
Gemstone
Turquoise
Blue to blue green copper aluminium phosphate, graded on colour evenness, hardness and matrix pattern.
Rough, slab and cabochon grade
Zinc silicate
Hemimorphite
Pale blue botryoidal crusts and clear bladed crystals, sought by collectors and lapidaries.
Cabinet and thumbnail specimens
Gemstone
Zircon
Zirconium silicate in reddish brown, honey and colourless material, with high brilliance when cut.
Rough by the gram, sized parcels
Gemstone
Titanite
Calcium titanium silicate, also called sphene. Honey to green wedge shaped crystals with strong fire when faceted.
Rough and specimen grade
Collector mineral
Kinoite
A deep blue calcium copper silicate in small crystals. A collector and reference species.
Thumbnail and micromount
Collector mineral
Carletonite
A rare blue phyllosilicate, in demand with collectors because good crystals come from very few localities.
Small collector specimens
Amphibole group
Glaucophane
The blue sodium amphibole that gives blueschist its colour. Supplied to collectors and teaching collections.
Hand specimens and study material
Carbonate mineral
Aurichalcite
Pale green to blue zinc copper carbonate in delicate tufted crusts. Packed boxed because the crystals are fragile.
Cabinet specimens, boxed
Barium minerals
Celsian & Sanbornite
Two barium minerals that occur together: celsian, a barium feldspar, and sanbornite, a barium silicate.
Hand specimens, matrix pieces
Sulphosalt
Galkhaite
An orange red sulphosalt containing mercury, arsenic and antimony. Supplied to collectors and laboratories only.
Micromount and research samples
Research mineral
Abelsonite
A nickel porphyrin mineral, reddish purple and extremely rare. Held for research buyers.
Research samples by arrangement
Arsenate mineral
Warikahnite
A pale yellow zinc arsenate found as small crystals. A specialist collector species.
Micromount specimens
Rare earth mineral
Kainosite
A yellow brown calcium rare earth silicate carbonate, of interest for collections and rare earth study.
Hand specimens and study lots
Phosphate mineral
Fluorcaphite
A rare calcium strontium rare earth fluoride phosphate from alkaline rock settings.
Small specimens, research lots
Quality and supply
Quality control.
Each lot is sampled and assayed by an independent laboratory, graded against our written standard for that product, and released with a certificate of analysis, a weight certificate and a photograph record.
Product lines
24
Product groups
3
Sales model
Spot & term
Inspection
Buyer appointed