Calc-spar Small 320×244 Medium 640×489 Large 1024×782 Download Tiff Original 2400×1832 | (423.3 KB) Description "Calc-spar occurs at a Scottish locality in acicular pyramidal crystals." —The Encyclopedia Britannica, 1903 Keywords Calc, Calc-spar, crystal, Pyramidal, Scottish, Spar Galleries Crystals Source: The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)
