Massive, 4.8" Dark Blue Azurite Sun on Siltstone from Australia

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SKU: 700037

Price:
$742.50 $1,113.75
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Description

This is a huge, 4.8" wide, dark-blue azurite sun that completely covers the kaolinitic siltstone/sandstone matrix that if formed within. It was collected from the Malbunka Copper Mine in the Northern Territory of Australia. Azurite suns of this size are uncommon. Comes with an acrylic display stand. Azurite is a deep blue copper-based mineral produced by the oxidation of copper ore deposits. Azurite suns are a unique formation of this mineral only found in a single mine, the Malbunka Copper Mine in Australia. These suns form between layers of a clay mineral called kaolinite (the white matrix the suns are on). They are thought to have been formed by hydrothermal fluids carrying copper ions through the bedding planes in the rock formation. Carbonate molecules and copper ions in the groundwater nucleated around mineral grains in the kaolinite, which resulted in crystallization of the azurite. Because the azurite was forced to grow in a laterally-compressed and radiating manner along preferred bedding planes, the azurite grew uniformly outward, often producing circular shapes.

DETAILS
SPECIES
Azurite
LOCATION
Malbunka Copper Mine, Utju, Northern Territory, Australia
SIZE
Azurite sun 4.8 x 3.85"
CATEGORY
SUB CATEGORY
ITEM
#136600

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