20.7 cts Rare Graphic pegmatite rock intergrowths quartz /feldspar TBG-3980

536

存貨單位: TBG-3980
尺寸（毫米）: 23.900 x 23.200 x 5.400mm
重量 (cts): 20.700
Treatment: No Treatment
類型: Cabochon
Shape: Freeform
顏色

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.

存貨單位: TBG-3980
尺寸（毫米）: 23.900 x 23.200 x 5.400 mm
重量 (cts): 20.700
Treatment: No Treatment
類型: Cabochon
Shape: Freeform
顏色

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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