Filters: Contacts: Hietanen, Anna Martta (X)
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Album caption: Photomicrograph showing small round garnet crystals (black) in a microcline-bearing light-colored band in the course-grained gneiss. Just north of locality 428. pla-plagioclase; mi-microline; qu-quartz. crossed nicols. Clearwater County, Idaho. c. 1950. Published as figure 61B in U.S. Geological Survey. Professional paper 344-A. 1962.
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Tags: Clearwater County, Idaho,
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Album caption: Photomicrograph of the rock shown in A. Small plagioclase laths (pl) and biotite flakes (B) are included in anhedral grains of orthoclase (or) and quartz (Q). Crossed nicols. Clearwater county, Idaho. c. 1957. Published as figure 6B in U.S. Geological Survey. Professional paper 344-D. 1963.
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Tags: Clearwater County, Idaho,
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Album caption: A polished hand specimen of thin laminated gneissic layer in the schist. The dark laminae consist of sillimanite and biotite. The light layers are quartz, plagioclase, and some garnet. Clearwater County, Idaho. c. 1950. Published as figure 8 in U.S. Geological Survey. Professional paper 344-A. 1962.
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Polished hand specimen of the metasomatic plagioclase (An50) - biotite-garnet rock from 1 mile east of the mouth of Elk Creek. All light-colored minerals are andesine (a); the dark round grains ate (sic) garnet (g); biotite (b) occurs between the other minerals. Clearwater County, Idaho. c. 1950. Published as figure 80A in U.S. Geological Survey. Professional paper 344-A. 1962.
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Tags: Clearwater County, Idaho,
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Album caption: Tabular plagioclase crystals oriented parallel to the foliation in hornblende-biotite quartz diorite of the Bucks Lake pluton. Quartz is in interstitial grains of medium size. Hornblende and biotite are either in individual grains or clustered in irregular lamellae parallel to the foliation. One mile northeast of Bucks Lake. Crossed nicols. Plumas County, California. ca. 1967. (Photomicrograph) Published as figure 29 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Polished hand specimens of diopside-plagioclase gneiss with secondary hornblende and plagioclase: No. 1, parallel to the bedding; No. 2, along a crack. Locality 208 along the North Fork of the Clearwater River. Clearwater County, Idaho. c. 1950. Published as figure 19 in U.S. Geological Survey. Professional paper 344-A. 1962.
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Album caption: Light-colored monzotonalite from the central part of the Grizzly pluton. Dark minerals are biotite and hornblende, gray is quartz, and white is plagioclase and microcline. California. circa 1967. (Specimen) Published as figure 34 in U.S. Geological Survey. Professional paper 731. 1973.
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Album caption: Photomicrograph of quartz diorite along Beaver Creek. Dark mineral are hornblende (ho) and biotite (Bi). Plane-polarized light. Clearwater county, Idaho. c. 1957. Published as figure 9A in U.S. Geological Survey. Professional paper 344-D. 1963.
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Album caption: Segregations of hornblende and plagioclase in pyroxene diorite, Bucks Lake pluton southeast of Bald Eagle. The faint lines that are nearly perpendicular to the top and bottom of the photo are joints. Plumas County, California. ca. 1967. Published as figure 25 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Photomicrograph of cordierite, andalusite, and sillimanite in biotite schist on Bear Creek. In the early cordirite the internal plane, show by rows of inclusions, is at an angle to the external foliation. Ordinary light. Plumas County, California. ca. 1967. Published as figure 8 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Photomicrograph of the field of figure A with crossed nicols. Plagioclase (pl) occurs in lath-shaped crystals that are twinned and zoned. Quartz (Q) is intersticial. Clearwater county, Idaho. c. 1957. Published as figure 9B in U.S. Geological Survey. Professional paper 344-D. 1963.
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Album caption: Two generations of late plagioclase are seen in a specimen of quartz diorite about a mile north of Bruces Eddy. The ealier plagioclase was crystallized as large grains in biotite quartzite and gneiss, the remnants of which are seen at left. The large white grains in the diorite are remnants of the same early plagioclase. The small grains of plagioclase in the quartz diorite are later. Clearwater County, Idaho. c.1950. Published as figure 87 in U.S. Geological Survey. Professional paper 344-A. 1962.
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Album caption: Photomicrograph showing secondary large round andesine grains in a fie-grained (sic) biotite schist along the North Fork of the Clearwater River near Dent. Large round plagioclase grains shown in top part of photomicrogrpah have crystalized late and disturbed the original foliated structure of the schist. a-andesine, b-biotite, q-quartz. Crossed nicols. Clearwater County, Idaho. c. 1950. Published as figure 80B in U.S. Geological Survey. Professional paper 344-A. 1962.
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Tags: Clearwater County, Idaho,
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Album caption: Photomicrograph showing tonalitic gneiss that contains large round plagioclase (pla) crystals embedded in fine-grained biotite-plagioclase gneiss. Clearwater County, Idaho. From railroad cut 2 miles west of Ahsahka. c. 1950. Published as figure 61C in U.S. Geological Survey. Professional paper 344-A. 1962.
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Album caption: Photograph of granite near Bungalow (loc. 758). Coarse-grained granite in which quartz grains (gray) and biotite flakes (black) are easily seen. Clearwater County, Idaho. n.d. Published as figure 14-A in U.S. Geological Survey Professional paper 344-D. 1963.
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Tags: Clearwater County, Idaho,
Hietanen-Makela, A.M. Collection,
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photograph
Album caption: Coarse-grained inner border zone of the Grizzly pluton at Reese Flat. Dark minerals, hornblende and biotite, are subparallel to the foliation which is still measurable. Plumas County, California. ca. 1967. (Specimen) Published as figure 33 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Hornblende-biotite quartz diorite from the Bucks Lake pluton, 1 mile south of Three Lakes. Dark minerals are hornblende and biotite; light-colored minerals are plagioclase and quartz. Plumas County, California. ca. 1967. (Specimen) Published as figure 27 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Polished hand specimin of augen gneiss with dark fine-grained inclusion. Dark layer between the inclusion and the gneiss is biotite. About 1 mile north of Bruces Eddy. Clearwater County, Idaho. c. 1950. Published as figure 61A in U.S. Geological Survey. Professional paper 344-A. 1962.
Album caption: Small folds with steep axes in metachert of the Calaveras Formation east of Long Lake. Hammer handle is paralell to fold axes. View is eastward. Axial plunge is 70 [degrees] NW. Plumas County, California. ca.1967. Published as figure 9 in U.S. Geological Survey. Professional paper 731. 1973.
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Plumas County, California,
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Album caption: Photomicrograph of gabbro along Beaver Creek. The main dark constituents are pyroxene (A) and hornblend (ho). Biotite (Bi) and magnetite (black) occur in small quantities. Plane-polarized light. Clearwater county, Idaho. c 1957. Published as figure 9C in U.S. Geological Survey. Professional paper 344-D. 1963.
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Tags: Clearwater County, Idaho,
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