AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from New Hampshire > Arfvedsonite (rare terminated twinned crystals)

Arfvedsonite (rare terminated twinned crystals) from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

DESCRIPTION:	No. 71539
Mineral:	Arfvedsonite (rare terminated twinned crystals)
Locality:	Hurricane Mountain, east of Intervale, Carroll County, New Hampshire
Description:	Rare terminated crystals of lustrous black arfvedsonite with brown limonite in crevices. The offset in the termination faces indicates is actually two contact-twinned arfvedsonite crystals with a central twin plane. Ex. Thomas A. Penney (1934-2019) collection, collected in the 1960s-70s
Overall Size:	24x9x3.5 mm
Crystals:	24 mm
Archived:	For reference only

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