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RM3571 Tapiolita-(Fe)
In this specimen we can observe an idiomorphic good size crystal of tapiolite-(Fe), Fe²⁺Ta₂O₆, that shows us different tetragonal faces. Good luster, intense black colour with iridescence on faces. It stands out on a matrix with albite and muscovite. The analyzes carried out indicate the presence of niobium in small proportions. These results will be sent to the buyer of the specimen.
Size: 4.9 x 4.2 x 3.5 cm.
Main crystal: 11 mm.
Analyzed specimen with report
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