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Spessartine Garnet on Muscovite/Feldspar Pegmatite Matrix Crystal Specimen

£28.80

(Actual as seen)

Only 1 left in stock

SKU: SM8790 Category:

Description

Spessartine Garnet Mineral Specimen

This crystal specimen features spessartine garnet associated with a muscovite and feldspar pegmatite matrix. The combination brings together a recognised garnet-group mineral and two important pegmatite-forming minerals, making it a relevant addition to a mineral collection, geology display or decorative crystal cabinet. Its documented identity is expressed in the product name, with the garnet occurring on the named matrix rather than being presented as an isolated crystal.

Spessartine Garnet Mineralogy

Spessartine is a manganese-aluminium garnet belonging to the garnet group of nesosilicate minerals. Garnets are recognised for their compact crystal structure and commonly develop in equant, granular or crystal-like forms. Spessartine is often associated with orange, orange-red, reddish-orange and red-brown colour ranges, although the appearance of individual specimens can vary according to composition, crystal development and mineral associations. The garnet group is valued by collectors for its distinctive chemistry, crystal structure and broad range of natural colour expression.

Muscovite and Feldspar Matrix

Muscovite is a mica-group mineral known for its layered sheet-silicate structure and excellent basal cleavage. In mineral collections, muscovite is especially notable for its reflective surfaces, platy habit and ability to occur as part of coarse-grained igneous mineral assemblages. Feldspar describes a major mineral group that includes common rock-forming silicates with varied compositions and crystal habits. Together, muscovite and feldspar provide a scientifically important matrix association for the spessartine garnet identified in this specimen.

Pegmatite Geological Context

Pegmatite is a coarse-grained igneous rock, generally formed from the final, mineral-rich portions of cooling intrusive magma. These late-stage fluids can allow crystals to grow relatively large compared with those in many ordinary igneous rocks. Pegmatites are therefore important collecting environments for well-developed mineral specimens and mineral associations. A garnet specimen on muscovite/feldspar pegmatite matrix illustrates the way individual minerals can occur together within a geological rock setting rather than appearing as unrelated loose pieces.

Collecting and Display

This specimen is suited to mineral collectors, students of geology, natural-history displays and anyone interested in crystal form and rock-forming mineral relationships. It can be displayed in a cabinet, on a shelf or as part of a themed pegmatite and garnet collection. The combination of spessartine garnet, mica and feldspar also makes it useful for comparing mineral groups, crystal habits and the different roles minerals play within an igneous matrix. As with natural geological specimens, surface character, crystal development and colour can show natural variation.

Certificate of Authenticity

This Crystal is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

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