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Rare Calcite Crystals in Vug - Sidmouth Mudstone Formation, Triassic, Sidmouth, Devon - 100% Genuine w/ COA

Rare Calcite Crystals in Vug – Sidmouth Mudstone Formation, Triassic, Sidmouth, Devon – 100% Genuine w/ COA

Original price was: £9.00.Current price is: £7.20.

All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity

 

Specimen: Euhedral Quartz Geode ‘Potato Stone”

Type: Mineral/Crystal

Location: Sidmouth, Devon, UK

Scale cube=1cm: Full sizing please see photo.

 

Euhedral Quartz – ‘Potato Stone”, Triassic, Sidmouth, Devon, UK.

Quartz replacement of a Sabkha Anydrite Nodule, like those of a modern Sabkha.

 

The type of precursors are found today in the Dukhan Sabkha of Qatar. Modern desert sabkhas are often ‘Khaki’ (light brown) in colour. The hydrated iron oxide (goethite) is converted by heat under burial to the reddish colour. The Trisssic mudstone probably was a filthy brown mud, but now looks quite attractive as hard mudstone. The calcium sulphate of the nodule has been partially replaced by euhedral quartz crystals growing in from the margin (pH controlled). Residual secondary gypsum, has very recently been dissolved away to leave a hollow centre.

 

ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.

(Actual as seen)

Only 1 left in stock

SKU: RP2503 Category:

Description

This is a stunning and rare specimen of Calcite Crystals in Vug from the Sidmouth Mudstone Formation, Triassic period, discovered in Sidmouth, Devon, UK. The unique crystal formations within the vug make this a highly sought-after piece for collectors and mineral enthusiasts alike.

Calcite is known for its distinctive crystal structure and its significance in both geological and metaphysical studies. This carefully selected specimen showcases well-formed calcite crystals naturally embedded within the matrix, making it an exceptional display piece.

Key Features:

  • 100% Genuine Specimen – Comes with a Certificate of Authenticity
  • Triassic Age (c. 251-201 million years old)
  • Unique Crystal Growth within a vug cavity
  • Sourced from Sidmouth, Devon – A known location for stunning calcite formations
  • Perfect for Collectors, Geologists, and Enthusiasts

Scale cube = 1cm. For full sizing details, please refer to the listing photos.

The item shown in the pictures is the exact specimen you will receive. We take pride in providing accurate, high-quality images to ensure you get the best representation of your purchase.

This rare British calcite specimen is a must-have for any serious collector and makes a unique gift for anyone fascinated by natural minerals. Don’t miss the opportunity to own this exceptional geological treasure!

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