On an ophitic rock matrix, a group of Quartz crystals showing an equidimensional shape, some of them with cubic shape, due to the minor development of prism faces. Precise analysis showed that their deep blue color is due to fibrous inclusions of Magnesioriebeckite. The specimen has been reviewed and published in the magazine ‘Lapis’ on page 50, volume 37, number 6, June 2012
Acedo Claim (Juanona Quarry), Juanona, Antequera, Comarca de Antequera, Málaga, Andalusia Spain (2000)
Specimen size: 7.3 × 5.1 × 2.2 cm = 2.87” × 2.01” × 0.87”
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