“Bringing The Past, Into the Future”

Northern Geological Supplies Ltd
Northern Geological Supplies Ltd

“Bringing The Past, Into the Future”


£1.20£3.01 ex VAT

This granite pegmatite contains large sheets of muscovite mica, orthoclase feldspar and quartz matrix. An excellent teaching material which comes from Southern Norway. Each specimen comes in a labelled card tray.

This product is currently out of stock and unavailable.

SKU: IGNROK027 Category:

Most pegmatites are similar in composition to granite containing quartz, feldspars & micas. The most striking features of this igneous rock are the large crystals, usually over 1" (2.5cm) in size. Some can even be metres across & demonstrate perfect textbook morphological examples. To attain this size the crystallisation mechanism would need to have been very protracted. Pegmatite bodies tend to be small & marginal to other igneous intrusives. Their mode of formation is uncertain but they could be derived from high temperature & pressure magmatic, metasomatic or metamorphic processes, or a combination

Additional information

Weight 130 g
Specimen Size

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