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Figure caption: Scanning electron micrograph of intergrown blocky clinoptilolite crystals from around 27 m in drill hole Y-2. The few tiny white hemispheral concentrations are montmorillonite crystals deposited later than the clinoptilolite. Scale bar is 50 microns. No index card. Published as Figure 6 in Zeolites in Yellowstone National Park. The Mineralogical Record; 12: 29-38.
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Album caption and index card: Mount Everts and Main Terrace. The Cretaceous sedimentary rocks of Mount Everts are capped in the right half of the figure by Pleistocene volcanic rocks erupted from the Yellowstone caldera. Main Terrace (with Jupiter Springs on the left, the blue pool of Main Spring in the center, and Canary Springs, marked by vapor plumes, on the right.) is the light-colored travertine terrace in the middle of the figure. Foreground shows part of tree-studded Prospect Terrace. Yellowstone National Park, Wyoming. n.d. Published as Figure 3 in U.S. Geological Survey. Bulletin 1444. 1978.
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Album caption and index card: Texture produced by fossil microorganisms in travertine from Pinyon Terrace. Yellowstone National Park, Wyoming. n.d. Published as Figure 20 in U. S. Geological Survey. Bulletin 1444. 1978.
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Album caption and index card: Calcite "ice", now partly collapsed. Deposit is on the surface of the former pool of spring MHS-12. Yellowstone National Park, Wyoming. n.d. Published as Figure 19, U.S. Geological Survey. Bulletin 1444. 1978.
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Album caption and index card: Collapse feature in the Highland Terrace area. The approximately 1.2-m-deep depression is one of the a series of collapsed areas that from a linear trend parallel to the group of tension fractures in the southwest corner of the Mammoth Hot Springs area. Yellowstone National Park, Wyoming. n.d. Published as Figure 12 in U. S. Geological Survey. Bulletin 1444. 1978.
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Figure caption: Scanning electron micrograph of tabular rhodocrosite crystals mostly coated by later septechlorite at 68.0 m. No index card. Published as Figure 6 in Hydrothermal alteration in research drill hole Y-11 from a vapor-dominated geothermal system at Mud Volcano, Yellowstone National Park, Wyoming in Wyoming Geological Association Guidebook. Thirty-Third Annual Field Conference. 1982.
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Photo caption: 5/20/77. Y2 - 46.5. Montmorillonite and intermediate heulandite. Figure caption: Scanning electron micrograph showing a detailed paragenetic sequence of hydrothermal minerals from 14 m in drill hole Y-2. Intermediate heulandite crystals are partly coated by mordenite fibers (upper right-hand corner) and spherical or hemispherical aggregates of montmorillonite platelets. Scale bar is 1 micron. No index card. Published as Figure 5 in Zeolites in Yellowstone National Park. The Mineralogical Record; 12: 29-38.
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Figure caption: Scanning electron micrograph of a rosette of tabular truscottite on leached potassium-feldspar from around 120 m in drill hole Y-13. Scale bar is 20 microns. No index card. Published as Figure 26 in Zeolites in Yellowstone National Park. The Mineralogical Record; 12: 29-38.
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Figure caption: Scanning electron micrograph of euhedral, trapezohedral analcime crystals from 28.3 m in drill hole Y-3. A few scattered clusters of smectite crystals are later deposits (after Bargar and others, 1981). No index card. Published as Figure 3 in U.S. Geological Survey. Professional Paper 1054-C. 1985.
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Figure caption: Scanning electron micrograph of euhedral crystals of yugawaralite with later smectite deposites at 73 m in drill hole Y-3 (after Bargar and others, 1981). No index card. Published as Figure 12 in U.S. Geological Survey. Professional Paper 1054-C. 1985.
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Figure caption: Scanning electron micrograph of fibrous mordenite crystals deposited at 60.2 m in drill core Y-3. A few mordenite needles are coated by later smectite (s). No index card. Published as Figure 10 in U.S. Geological Survey. Professional Paper 1054-C. 1985.
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Photo caption: 5/20/77. Y2- 46.5. Intermediate heulandite and montmorillomite. Figure caption: Scanning electron micrograph of altered glass from 14.2 m. A montmorillonite-filled former hydration crack shown in left half of photo. Rigth half shows area between clay-filled hydration cracks in which tabular- or "tombstone" - shaped intermediate heulandite crystals are oriented perpendicular to remanent hydration cracks. Fibrous mordenite and clusters of montmorillonite platelets are later than the heulandite. White bar at bottom left is 10 microns. (After Bargar et al., 1981). No index card. Published as Figure 5 in Hydrothermal alteration in research drill hole Y-2, Lower Geyser Basin, Yellowstone National Park,...
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Figure caption: Scanning electron micrograph of montomorillonite-coated spherical bastnaesite crystal clusters (?) lining a fracture at 36.0 m. Some spheres appear to consist of aggregates of bladed crystals. No index card. Published as Figure 8 in Hydrothermal alteration in research drill hole Y-11 from a vapor-dominated geothermal system at Mud Volcano, Yellowstone National Park, Wyoming in Wyoming Geological Association Guidebook. Thirty-Third Annual Field Conference. 1982.
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Figure caption: Scanning electron micrograph of a large radiating cluster of dachiardite crystals deposited on hydrothermal quartz crystals in a cavity at about 60 m in drill hole Y-3. Paragenetic sequence of quartz (upper left and lower right), blocky dachiardite crystals (extending from upper right to left centre), radiating fibrous mordenite crystals, and numerous clusters of tiny smectite crystals (after Bargar et al. 1981). No index card. Published as Figure 12 in Zeolites in Yellowstone National Park. The Mineralogical Record; 12: 29-38. Published as Figure 3-B in Dachiardite from Yellowstone National Park, Wyoming. Canadian Minerologist; 25: 475-483. Published as Figure 11 in Calcium zeolites...
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Figure caption: Scanning electron micrograph of laumontite crystals from 85.4 m in drill core Y-3. Tiny crystal clusters of mixed-layer illitesmectite are deposited on laumontite crystal surfaces and in solution cavities (?) (left center of photo). No index card. Published as Figure 9 in U.S. Geological Survey. Professional Paper 1054-C. 1985.
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Figure caption: Vapor-phase cavity at 74.2 m coated by dark (green) septechlorite, and intergrown white bladed calcite and clear to white botryoidal chalcedony. Cavity also contains late prismatic quartz and mordenite. No index card. Published as Figure 7 in Hydrothermal alteration in research drill hole Y-11 from a vapor-dominated geothermal system at Mud Volcano, Yellowstone National Park, Wyoming in Wyoming Geological Association Guidebook. Thirty-Third Annual Field Conference. 1982.
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Album caption and index card: Glen Springs. White central ridge is shown nearly surrounded by two older subparallel fissure ridges. If Glen Springs remain active, enough travertine may eventually be deposited to form a flat terrace between the old bounding ridges. Yellowstone National Park, Wyoming. n.d. Published as Figure 17, U.S. Geological Survey. Bulletin 1444. 1978.
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Figure caption: Scanning electron micrograph of polysynthetically twinned acicular aggregates of bladed dachiardite from 98.1 m in drill core Y-6. Fibrous mordenite (m) and boxwork clusters of platy smectite (s) crystals partly coat the striated dachiardite (d) needles. (Graphics on published photograph). May 8, 1981. No index card. Published as Figure 10 in U.S. Geological Survey. Professional Paper 1054-B. 1984.
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Figure caption: Scanning electron micrographs from drill core Y-3. Cluster of bladed pectolite crustals deposited later than quartz at 27.5 m (after Bargar and others, 1981). No index card. Published as Figure 17-B in U.S. Geological Survey. Professional Paper 1054-C. 1985.
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Figure caption: Scanning electron micrograph showing boxwork of septechlorite coating rhodochrosite at 68.0 m. No index card. Published as Figure 5 in Hydrothermal alteration in research drill hole Y-11 from a vapor-dominated geothermal system at Mud Volcano, Yellowstone National Park, Wyoming in Wyoming Geological Association Guidebook. Thirty-Third Annual Field Conference. 1982.
map background search result map search result map Mount Everts and Main Terrace. Yellowstone National Park, Wyoming. No date. Collapse feature in the Highland Terrace area of the Mammoth Hot Springs area. Yellowstone National Park, Wyoming. No date. Calcite "ice" now partly collapsed. The deposit is on the surface of the former pool of spring MHS-12. Yellowstone National Park, Wyoming. No date. Texture produced by fossil microorganisms in travertine from Pinyon Terrace. Yellowstone National Park, Wyoming. No date. Glen Springs. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of euhedral, trapezohedral analcime crystals from 28.3 m in drill hole Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of laumontite crystals from 85.4 m in drill core Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of fibrous mordenite crystals deposited at 60.2 m in drill core Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of euhedral crystals of yugawaralite with later smectite deposites at 73 m in drill hole Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrographs from drill core Y-3, showing a cluster of bladed pectolite crystals deposited later than quartz at 27.5 m. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of polysynthetically twinned acicular aggregates of bladed dachiardite from 98.1 m in drill core Y-6. Upper Firehole River, Yellowstone National Park, Wyoming. 1981. Scanning electron micrograph showing boxwork of septechlorite coating rhodochrosite at 68.0 m. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of montomorillonite-coated spherical bastnaesite crystal clusters. Mud Volcano, Yellowstone National Park, Wyoming. No date. Vapor-phase cavity at 74.2 m coated by dark (green) septechlorite. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of tabular rhodocrosite crystals mostly coated by later septechlorite at 68.0 m. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of altered glass from 14.2 m. Yellowstone National Park, Wyoming. 1977. Scanning electron micrograph showing a detailed paragenetic sequence of hydrothermal minerals from 14 m in drill hole Y-2. Yellowstone National Park, Wyoming. 1977. Scanning electron micrograph of a rosette of tabular truscottite on leached potassium-feldspar. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of a large radiating cluster of dachiardite crystals deposited on hydrothermal quartz crystals. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of intergrown blocky clinoptilolite crystals from around 27 m in drill hole Y-2. Yellowstone National Park, Wyoming. No date. Mount Everts and Main Terrace. Yellowstone National Park, Wyoming. No date. Collapse feature in the Highland Terrace area of the Mammoth Hot Springs area. Yellowstone National Park, Wyoming. No date. Calcite "ice" now partly collapsed. The deposit is on the surface of the former pool of spring MHS-12. Yellowstone National Park, Wyoming. No date. Texture produced by fossil microorganisms in travertine from Pinyon Terrace. Yellowstone National Park, Wyoming. No date. Glen Springs. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of euhedral, trapezohedral analcime crystals from 28.3 m in drill hole Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of laumontite crystals from 85.4 m in drill core Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of fibrous mordenite crystals deposited at 60.2 m in drill core Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of euhedral crystals of yugawaralite with later smectite deposites at 73 m in drill hole Y-3. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrographs from drill core Y-3, showing a cluster of bladed pectolite crystals deposited later than quartz at 27.5 m. Lower Geyser Basin, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of polysynthetically twinned acicular aggregates of bladed dachiardite from 98.1 m in drill core Y-6. Upper Firehole River, Yellowstone National Park, Wyoming. 1981. Scanning electron micrograph showing boxwork of septechlorite coating rhodochrosite at 68.0 m. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of montomorillonite-coated spherical bastnaesite crystal clusters. Mud Volcano, Yellowstone National Park, Wyoming. No date. Vapor-phase cavity at 74.2 m coated by dark (green) septechlorite. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of tabular rhodocrosite crystals mostly coated by later septechlorite at 68.0 m. Mud Volcano, Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of altered glass from 14.2 m. Yellowstone National Park, Wyoming. 1977. Scanning electron micrograph showing a detailed paragenetic sequence of hydrothermal minerals from 14 m in drill hole Y-2. Yellowstone National Park, Wyoming. 1977. Scanning electron micrograph of a rosette of tabular truscottite on leached potassium-feldspar. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of a large radiating cluster of dachiardite crystals deposited on hydrothermal quartz crystals. Yellowstone National Park, Wyoming. No date. Scanning electron micrograph of intergrown blocky clinoptilolite crystals from around 27 m in drill hole Y-2. Yellowstone National Park, Wyoming. No date.