Prehnite with Epidote, Quartz - image 1
Prehnite with Epidote, Quartz - image 2

Prehnite with Epidote, Quartz

$85.00

VisaMastercardAmerican ExpressPayPalPayPal Pay In 4Discover·
  • Free shipping
  • Seller offers an extended return window of up to 14 days
  • USAShips from USA

Light green botryoidal crystallized redundant across the top of matrix with deep green epidote crystals. In good condition.The Allouez Number 3 Mine, also known as the Allouez Douglass Shaft in Keweenaw County, Michigan, was opened in 1942 by the Calumet and Hecla Mining Company and operated until it permanently closed in 1966. Geologically, the site is situated within the Keweenaw Peninsula's Jacobsville and volcanic trap rock terrain, where operations targeted native copper deposits hosted within the Houghton Conglomerate and an unnamed amygdaloid lode formed during the Precambrian Keweenawan flood basalt episodes.

Product details

SpeciesQuartz, Prehnite, Epidote
SizeSmall Cabinet
Dimensions10.0 x 8.0 x 4.5 cm
Listed on09/23/2026
LocalityAllouez #3 Mine, Keweenaw Co., Michigan, USA
SKU1791321
Current owner
WM
Weinrich MineralsFeatured
Acquired
Sep 2026
3,225 for sale·9 sold

Learn more

Quartz
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.