File:Emerald Pearl Granite (larvikite) (Larvik Batholith, 292-298 Ma, Early Permian; near Larvik, Norway) (14783977716).jpg
![File:Emerald Pearl Granite (larvikite) (Larvik Batholith, 292-298 Ma, Early Permian; near Larvik, Norway) (14783977716).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Emerald_Pearl_Granite_%28larvikite%29_%28Larvik_Batholith%2C_292-298_Ma%2C_Early_Permian%3B_near_Larvik%2C_Norway%29_%2814783977716%29.jpg/712px-Emerald_Pearl_Granite_%28larvikite%29_%28Larvik_Batholith%2C_292-298_Ma%2C_Early_Permian%3B_near_Larvik%2C_Norway%29_%2814783977716%29.jpg?20191206012958)
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[edit]DescriptionEmerald Pearl Granite (larvikite) (Larvik Batholith, 292-298 Ma, Early Permian; near Larvik, Norway) (14783977716).jpg |
Larvikite (“Emerald Pearl Granite”) from the Larvik Batholith (Early Permian) near Larvik, southern Norway. Larvikite is one of my favorite rocks. It’s a variety of monzonite, though it’s sometimes misperceived as a variety of syenite. Larvikite is dominated by large crystals of spectacularly bluish-iridescent (schillerescent) perthitic feldspar (closely intergrown potassium feldspar and plagioclase feldspar). The play of colors is the result of light being dispersed along the plagioclase and K-feldspar crystal boundaries. The smaller black crystals are pyroxene. Varieties of larvikite are popular decorative/ornamental stones known commercially as “Blue Pearl Granite”, “Emerald Pearl Granite”, and other names. They are quarried from the Larvik Batholith (a.k.a. Larvik Pluton, Larvik Complex, Larvik Plutonic Complex), a suite of 10 igneous plutons emplaced in the Oslo Rift (Oslo Graben) surrounded by ~1.1 billion year old Sveconorwegian gneisses. The Larvik Batholith dates to about 292-298 million years old (early Early Permian). Many quarries exploit larvikite in the vicinity of the town of Larvik in southwestern Vestfold County, southern Norway. |
Date | |
Source | Emerald Pearl Granite (larvikite) (Larvik Batholith, 292-298 Ma, Early Permian; near Larvik, Norway) |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/14783977716 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 December 2019
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current | 01:29, 6 December 2019 | ![]() | 1,047 × 882 (1.69 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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