Calcite twin - image 1
Photo by László Kupi

Calcite twin

Kevin Brown
Kevin Brown
Parker, TX
0 for sale·Member since 2026
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
LocalityUSA, New York, Empire State No. 4 Mine
Publications
  • Mineralogical Record The Kevin Brown Collection page 66

Known provenance

DateCollectorAcquisition price
—Robert “Rocko” 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.
Regional guide
Calcite from Empire State No. 4 Mine
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