mineral sample and specimens

image	Minerals sample box (m001)	price	purchase
	A nice little box of 25 sample minerals, very popular with young collectors click image to enlarge / price per box	£
image	Aragonite forms (m002)	price	purchase
	Aragonite is an interesting mineral, its chemical formula is calcium carbonate so is in fact a type of calcite. Average size as shown Click image to enlarge / price per one	£
image	Aragonite sputnik type (m003)	price	purchase
	Aragonite, being a polymorphic mineral,often forms in ball-like clusters of crystals through a process called crystal twinning. Each crystal has a hexagonal cross-section. Average size as shown click image to enlarge / price per one	£
image	Azurite (m004)	price	purchase
	Azurite Specimens. Azure is derived from the arabic word for blue. Azurites rich blue colour is due to the presence of copper. Average size as shown click image to enlarge / price per one	£
image	calcite (orange) (m005)	price	purchase
	Lovely rich orange chunks of orange calcite, good enough to eat! Average size as shown click image to enlarge / price per one	£
image	calcite (emerald) (m006)	price	purchase
	Beautiful emerald green chunks of calcite . Average size as shown click image to enlarge / price per one	£
image	blue chalcedony (m007)	price	purchase
	chalcedony refers to a type of quartz with a micro crystaline structure, i.e. the crystals are so small they can only be seen with a powerful microscope. The various types differ in color due to metallic impurities, such as iron, nickel, copper, and titanium present during crystallization. Average size as shown click image to enlarge / price per one	£
image	Copper sulphate (m008)	price	purchase
	Lab grown copper sulphate crystal specimen, average size as shown click image to enlarge / price per one	£
image	emerald in matrix (m008a)	price	purchase
	Emerald samples in matrix click image to enlarge / price per one	£
image	fluorite (m009)	price	purchase
	Fluorite occurs in a variety of colors, these chunks are a beautiful rich purple. Fluorite is so named from the latin for "flow" because it melts very easily and is used in the smelting of metallic ores. Average size as shown click image to enlarge	£
image	hemimorphite (m010)	price	purchase
	Chemical composition Zn4 Si2 O7 (OH)2 -H2O, Hydrated Zinc Silicate Hydroxide. Hemi means half while the morph means shape and thus hemimorphite is aptly named because the crystal structure produces a different termination at each end of the crystal. Average size as shown. Click image to enlarge	£
image	icelandic spar clear (m011)	price	purchase
	A variety of calcite , calcium carbonate, CaCo3, characterised by its clear colour and double refraction, average size as shown click image to enlarge / price per one	£
image	icelandic spar pink (m012)	price	purchase
	A variety of calcite , calcium carbonate, CaCo3, characterised by its clear colour and double refraction, average size as shown click image to enlarge / price per one	£
image	galena (m012a)	price	purchase
	Galena is lead sulfide (PbS), the main mineral of lead ore. It occurs as metallic to lead-grey, cube shaped crystals that break into cubic, right-angled fragments. click image to enlarge / price per one	£
image	Garnet specimens (m013)	price	purchase
	Red garnet in matrix Garnets belong to the isometric crystal class, which produces very symmetrical, cube-based crystals. click image to enlarge / price per one	£
image	Kyanite black (m014)	price	purchase
	Kyanite, Aluminum silicate , is striated or layered crystal, often transparent or pearlized, average size as shown click image to enlarge / price per one	£
image	Kyanite blue (m015)	price	purchase
	Kyanite, Aluminum silicate , is striated or layered crystal, often transparent or pearlized, average size as shown click image to enlarge price per one	£
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