Rutile Geniculate Twin on Quartz North Carolina 59g
This is an excellent example of larger sized, thicker, well formed geniculate twin*, nicely terminated rutile. This substantial, robust, less common variety of rutile from North Carolina exhibits a considerably different and impressive presence. Great metallic luster too.
* A geniculate twin crystal is one that presents with twinned form showing that the twin-plane has significantly changed the shape of the crystal. Also referenced as a "knee or elbow twin".
59 grams. 2.21" x 1.29" x 1.11" or 56.3mm x 31.8mm x 28.4mm
Stony Point, Alexander Co., North Carolina.
This is an excellent example of larger sized, thicker, well formed geniculate twin*, nicely terminated rutile. This substantial, robust, less common variety of rutile from North Carolina exhibits a considerably different and impressive presence. Great metallic luster too.
* A geniculate twin crystal is one that presents with twinned form showing that the twin-plane has significantly changed the shape of the crystal. Also referenced as a "knee or elbow twin".
59 grams. 2.21" x 1.29" x 1.11" or 56.3mm x 31.8mm x 28.4mm
Stony Point, Alexander Co., North Carolina.