37 cts Rare Graphic pegmatite rock intergrowths quartz /feldspar TBG-3970

397

SKU: TBG-3970
Dimensions (mm): 49.600 x 21.000 x 5.800mm
Weight (cts): 37.000
Treatment: No Treatment
Type: Cabochon
Shape: Freeform
Colours

Graphic pegmatite rock intergrowths of quartz and feldspar

SOUTH DAKOTA , USA

Graphic granite, found predominantly in granitic pegmatite, is a leucocratic granitic rock consisting of an intimate intergrowth of alkali feldspar and quartz with a distinctive texture as ancient cuneiform writing when viewed in certain cross sections.

texture is a graphic intergrowth

two different minerals as a result of their simultaneous crystallization.

SKU: TBG-3970
Dimensions (mm): 49.600 x 21.000 x 5.800 mm
Weight (cts): 37.000
Treatment: No Treatment
Type: Cabochon
Shape: Freeform
Colours

Graphic pegmatite rock intergrowths of quartz and feldspar

SOUTH DAKOTA , USA

texture is a graphic intergrowth

two different minerals as a result of their simultaneous crystallization.

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