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Hornblende-biotite granite
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Hornblende-biotite granite
Geological specimen collected by Scotts British Antarctic Expedition 1910-1913, also known as the Terra Nova expedition. It had a broad scientific programme and collected thousands of geological and zoological specimens. Granite is a type of igneous rock often with a coarser texture. This example, from McMurdo Sound, contains the minerals hornblende and biotite
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Media ID 8623680
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Aerinite Antarctic Antarctica Double Chain Inosilicate Granite Igneous Inosilicate Intrusion Intrusive Intrusive Rock Mica Mineral Phyllosilicate Scott Scott Expedition Silicate Silicate Mineral Terra Nova Terra Nova Expedition Biotite Hornblende Mcmurdo Sound
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This print showcases a magnificent piece of Hornblende-Biotite Granite, a type of intrusive igneous rock, collected during the historic Terra Nova Expedition (1910-1913) led by Sir Robert Falcon Scott. The expedition, which had a broad scientific programme, yielded thousands of geological and zoological specimens, including this intriguing rock sample from McMurdo Sound, Antarctica. Granite, known for its coarser texture, is a common type of silicate rock. The minerals present in this specimen, Hornblende and Biotite, add to its unique character. Hornblende, an inosilicate mineral, is characterized by its dark, prismatic crystals, while Biotite, a phyllosilicate mineral, appears as flat, black, mica-like flakes. The intrusion of magma into the Earth's crust, cooling and solidifying over time, formed this stunning geological feature. The presence of both Hornblende and Biotite in this granite indicates that it cooled slowly, allowing these minerals to crystallize. A closer look reveals the intricate beauty of the minerals, with Aerinite, a double chain inosilicate, making an appearance. The interplay of light and shadow on the granite's surface brings out the intricate textures and mineral patterns, making this a truly mesmerizing specimen. This print is a testament to the rich scientific discoveries made during the Terra Nova Expedition, which significantly contributed to our understanding of the geology of Antarctica. The intrusive nature of this granite, with its distinct minerals, serves as a reminder of the dynamic processes that shape our planet.
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