Calcite twin

Calcite twin, 17.7 cm, from the Empire State No. 4 mine, Balmat, St. Lawrence County, New York. Ex Robert “Rocko” Rosenblatt specimen; László Kupi photo.

Product details

SpeciesCalcite
SizeLarge Cabinet
Dimensions17.7 cm
Added on03/26/2026
Publications
  • Mineralogical Record The Kevin Brown Collection page 66
Current owner
Kevin Brown
Parker, TX
Member since 2026
Previous owners
DateCollectorAcquisition price
—Robert RosenblattNot disclosed

Learn more

Calcite
Mineral guide
Learn about Calcite
diverse shapes, colors, and optical quirks; widely available yet scarce elite pieces from Elmwood and Charcas drive collecting value and display.
Calcite
Regional guide
Calcite from Empire State No. 4 Mine
Sign in to contribute
Locality guide
Empire State No. 4 Mine
A collector's guide to Empire State No. 4 Mine, USA: its geology, mining history and notable minerals, illustrated with the 90 specimens documented from this locality on EarthWonders.