Kyanite (Twinned)
Posted by: macadmin on 05.14.2020 | Filed under:

Kyanite (Twinned)

Specimen # 102195
Mineral: Kyanite (Twinned)
Location: Kyanite (Twinned), Nani, Loliondo, Arusha, Tanzania
Size: 3.0 x 1.8 x 1.1 cm


This is a great contact twin, on the rare 121 twinning law (the last one is bar-one but I don’t seem to be able to put a bar over it). Unlike some of these, where the twinned crystals are similar size, forming a “V”, this specimen features a larger and a smaller crystal.

This specimen is deep orange, with great transparency. It is in excellent condition, however as is the case for pretty much all of the specimens from this find, it has some rough spots at the edges – late in their formation, these crystals were naturally etched. The crystals are fully terminated.

The kyanites from this find, about 35 km northeast of Loliondo, are very unusual – they are orange due to trace amounts of manganese, and only some are twinned.

As with all photos on the site, this is colour balanced to daylight – under halogen this specimen is warmer with more internal red hue.

This is a sweet twinned orange kyanite.

Additional information

Dimensions 11 × 30 × 18 cm