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Hajar | all galleries >> Mineral Galleries >> Crystal Twins >> Twins of Isometric Minerals >> Fluorite Twins > Fluorite spinel twin, 2 cm on 7 cm specimen. Naica, Chihuahua, Mexico.
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25-MAY-2013

Fluorite spinel twin, 2 cm on 7 cm specimen. Naica, Chihuahua, Mexico.

Published (Figure 17) in The Mineralogical Record, volume 52, March-April 2021. Smith & Holtkamp, Twinning in Fluorite Crystals.

Sony Alpha 77
1/15s f/20.0 at 105.0mm iso200 hide exif
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Date/Time25-May-2013 12:43:05
MakeSony
ModelSLT-A77V
Flash UsedNo
Focal Length105 mm
Exposure Time1/15 sec
Aperturef/20
ISO Equivalent200
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