Rocks and Minerals
Showing 351–400 of 595 results
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Magnesite Specimens
£3.00 -
Magnetite Crystal Specimens
£1.00 – £7.00 -
Magnetite crystals in matrix
£4.00 -
Magnetite from Imilchil, Morocco
£7.50 -
New
Magnetite from Port Muck, Northern Ireland
£5.00 -
Magnetite specimens from Iron Mountain, Utah, USA
£3.50 -
Malachite from Bampfylde Mine, Devon
£20.00 -
Malachite from Bou Beker, Morocco
£7.50 -
New
Malachite from Burra Burra Copper Mine, Australia
£20.00 -
Malachite from Castor Mine, Germany
£25.00 -
Malachite from L’Etoile du Congo Mine, DRoC
£10.00 -
Malachite on baryte from Clevedon Beach, North Somerset
£10.00 -
Malachite Specimens / Rough
£6.00 – £8.00 -
Updated
Malachite specimens from the Great Orme, Wales
£5.00 – £7.00 -
Manganese Dendrite specimens from Solnhofen, Germany
£12.50 -
Manganese dendrites in Calcite
£3.50 -
Manganocalcite from Pachapaqui mining district, Peru
£20.00 -
Menilite from Camp dels Ninots, Spain
£5.00 -
Meta-Stibnite after Berthierite from Gründenwald, Germany
£20.00 -
Microcline from Lake George, USA
£15.00 -
Mimetite from Brandy Gill Mine, Cumbria
£10.00 -
Mixite from Schmiedestollen dump, Germany
£25.00 -
Molybdenite and Schorl from Hingston Down Quarry, Cornwall
£15.00 – £25.00 -
Molybdenite from Hingston Down Quarry, Cornwall
£12.50 -
Molybdenite from Toron Mines, Spain
£6.50 -
Molybdenite from Zinnwald, Germany
£5.00 – £6.00 -
Molybdenite specimens
£3.00 -
Montgomeryite from Montcada Hill Quarry, Spain
£7.50 -
Mookaite Specimens
£3.00 – £4.00 -
New
Morganite from Urucum claim, Brazil
£3.00 -
Moroccan Quartz Geode specimens
£3.50 -
New
Mottramite from Mottram St Andrew, Cheshire
£5.00 -
New
Muscovite from Molopo Mine, Namibia
£5.00 -
Natrolite and Phillipsite from Láz Hill mine, Hungary
£25.00 -
Nepheline from Town of Bancroft, Canada
£5.00 -
Nickeline from Cobalt area, Canada
£7.50 – £10.00 -
Obsidian Specimens / Rough (Apache Tear)
£0.65 – £2.50 -
Obsidian Specimens / Rough (Black)
£3.00 -
Obsidian Specimens / Rough (Mahogany)
£1.25 – £2.00 -
Obsidian Specimens / Rough (Snowflake)
£1.00 – £3.00 -
Obsidian specimens from New Mexico, United States
£3.50 – £4.00 -
Okenite from Malad Quarry, India
£7.50 -
Oligoclase feldspar (Sunstone) from Sitasaongi mine, India
£5.00 -
Opal from Acari Mine, Peru
£5.00 -
Opal from Cabezo Negro de Tallante, Spain
£5.00 -
Opal from Opal Butte, USA
£4.00 -
Opal from Virgin Valley, USA
£5.00 -
Opal Specimens – Australian Opal in Limonite
£4.00 – £15.00 -
Opal Specimens – Hyalite (Opal-AN)
£1.50 – £10.00 -
Orthoclase Feldspar specimens from Norway
£1.50
Minerals are mostly naturally occurring, inorganic substances with a definite chemical composition and an ordered atomic structure.
Rocks are composed of one or more minerals, mineraloids, or organic materials. They are classified into three main types—igneous, sedimentary, and metamorphic—based on how they form.