AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Colorado > Microcline (intersecting Carlsbad-law twins)

Microcline (intersecting Carlsbad-law twins) from Maroon Bells, Elk Mountains, southwest of Aspen, Pitkin County and Gunnison County, Colorado

DESCRIPTION:	No. 56933
Mineral:	Microcline (intersecting Carlsbad-law twins)
Locality:	Maroon Bells, Elk Mountains, southwest of Aspen, Pitkin County and Gunnison County, Colorado
Description:	Unusual specimen of two intersecting pairs of microcline crystals that are twinned following the Carlsbad Law of feldspar twinning. These crystals were phenocrysts that weathered out of solid granite. Ex. Thomas A. Penney (1934-2019) collection, collected in the 1970s by his son.
Overall Size:	6.5x4.5x4 cm
Crystals:	50 mm
Archived:	For reference only

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