Mineral Specimen #4785 Fahlunite, Cordierite (Iolite), Quartz, K-Feldspar, Muscovite
Kragero, Telemark, Norway
7 x 3.5 x 3.4 cm
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Ex. Carniege Museum, White collection (no museum label), Ex. Excalibur Mineral Co., Ex. J. Cilen, Ex. J. B. Nichols
(Mg,Fe)Al2Si3O10·2H2O
The Fahlunite is present as an orange/tan colored crust and is an alteration product from Cordierite which is also present as light blue colored crystals frozen in matrix. Please note: although Cordierite is listed on mindat for the location, Fahlunite is not.
Condition: Good
Flaws: Essentially massive material.
This mineral is also found in the following galleries: Minerals From Europe | Cyclosilicates | Tectosilicates | Quartz | Phyllosilicates | Rare Minerals | Minerals Priced Between 25 and 49 Dollars
