Scanning electron micrograph showing closely associated fibrous mordenite and stubby bundles of bladed dachiardite crystals. Yellowstone National Park, Wyoming. No date.

Figure caption: Scanning electron micrograph showing closely associated fibrous mordenite and stubby bundles of bladed dachiardite crystals from 72.2 m in drill core Y-6 (after Bargar, et al. 1981). No index card. Published as Figure 19 in Zeolites in Yellowstone National Park. The Mineralogical Record; 12: 29-38. Published as Figure 4 in Dachiardite from Yellowstone National Park, Wyoming. Canadian Minerologist; 25: 475-483.