SCANDINAVIAN MINERALS
Cordierite (Iolite), Bamble, Fossingfjorden, Norway.
Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate.
Cordierite is a common mineral occurs as a characteristic, usually accessory, phase in many types of felsic peraluminous extrusive and intrusive igneous rocks (rhyolites, granitoids, pegmatites).
It is colourless but is altered to bluish or grey.
Chemical formula: (Mg,Fe)2[Si5Al4O18] . nH2O.
Additional reading Mindat.org
All prices are in Swedish currency or US$.
Exchange rate 100:- SEK. (= €10, $9, £12)
Discount is avalable.This Lot was published in August 2026.
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Item: co1. Cordierite, Bamble,
Fossingfjorden, Norway. Size: 3.5x1.5cm. 20:-SEK. US$2.00. 11g. |
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Item: co2. Cordierite, Bamble,
Fossingfjorden, Norway. Size: 2.7x1.6cm. 25:-SEK. US$2.50. 15g. |
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Item: co3. Cordierite (a slice), Bamble,
Fossingfjorden, Norway. Size: 5x3.3cm. 27:-SEK. US$3.00. 24g. SOLD. |
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Item: co4. Cordierite, Bamble,
ßFossingfjorden, Norway. Size: 3.4x3cm. 55:-SEK. US$5.50. 40g. |
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Item: co5. Cordierite (colourless), Bamble,
Fossingfjorden, Norway. Size: 5x2.5cm. 76:-SEK. US$8.00. 54g. |
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Item: co6. Cordierite, Bamble,
Fossingfjorden, Norway. Size: 4x3cm. 40:-SEK. US$4.00. 27g. |
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Item: co7. Cordierite XL, Harris Quarry,
Richmond, New Hampshire, USA. Size: 4.6x2.5cm. 80:-SEK. US$8.00. 35g. Label Eric Green. |