Looking for genuine Crystals, Natural Tumblestones, Collectible Gemstones, Jewellery, Meteorites (Space rocks)? Look no further than My Lost Gems. Our extensive collection of nature’s hidden treasures is carefully selected for high quality and authenticity, and each item comes with a certificate of authentication. We offer a unique “buy what you see” shopping experience. With new products constantly being added, My Lost Gems is your go-to source for one-of-a-kind hidden gems. Shop now and discover the wonders of the earth.
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Andesite, Cumbria, UK (rock sample)
£3.36 Original price was: £3.36.£3.02Current price is: £3.02.
(Regular, will differ to photo)
Only 14 left in stock
Description
All our rocks are carefully selected for educational study. Average specimen size is shown below. These are ideal for classroom teaching and are a size that can be easily passed round the classroom for students to get a feel for each type.
Andesite is an extrusive volcanic rock of intermediate composition. In a general sense, it is the intermediate type between basalt and rhyolite. It is fine-grained to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende.
Approx: 30-40mm
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