Mcgovernite from Franklin, New Jersey, USA - image 1
Mcgovernite from Franklin, New Jersey, USA - image 2
Updated 3d ago

Mcgovernite from Franklin, New Jersey, USA

$250.00

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

Rich reddish-brown grains of mcgovernite to 0.4 cm in size throughout this matrix of massive calcite, franklinite, and willemite. The specimen comes with a previous label from the collection of Ray DeMark.Franklin, New Jersey, situated in the Sussex County Highlands, is world-famous for its unique Precambrian stratiform metamorphic ore body hosted within the Franklin Marble. Active mining began in the mid-1800s and continued for over a century, producing vast quantities of zinc ore while establishing the area as the fluorescent mineral capital of the world. Among the more than 300 mineral species discovered in the region, mcgovernite is one of the rarest and most complex hydrous manganese zinc arsenosilicates found anywhere on Earth. First described from the Sterling Hill mine in nearby Ogdensburg during the 1920s, mcgovernite occurs as bronzy-brown to reddish thin micaceous flakes.

Product details

SpeciesMcgoverniteCalciteFrankliniteWillemite
SizeSmall Cabinet
Dimensions6.0 x 4.0 x 2.0 cm
Listed on10/22/2026
LocalityUSA, New Jersey, Franklin
SKU2063426

Current owner

WM
Weinrich MineralsFeatured
3,402 for sale·9 sold

Learn more

Mcgovernite
Mineral guide
Learn about Mcgovernite
Contribute
Mcgovernite
Regional guide
Mcgovernite from Franklin
Contribute
Locality guide
Franklin
Franklin, USA - world-renowned locality in Franklin Marble producing franklinite, willemite, and zincite; famed fluorescence, specimens, and collector value.