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Unique Identification: Amphibole
Site name: Yellowstone
Light type: Plane-Polarized Light
Magnification: 630
Submitted by: Val Stanley
Notes: Classic amphibole with green-to-brown pleochroism, moderate birefringence, low extinction angle
Image Tags: greenish-brown good-cleavage
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Unique Identification: Amphibole
Site name: Yellowstone
Light type: Cross-Polarized Light
Magnification: 630
Submitted by: Val Stanley
Notes: Classic amphibole with green-to-brown pleochroism, moderate birefringence, low extinction angle
Image Tags: moderately-birefringent cleavage
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Unique Identification: Amphibole
Site name: Petit du Fresnoy
Light type: Plane-Polarized Light
Magnification: 100
Submitted by: Val Stanley
Notes: none
Image Tags: none
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Unique Identification: Amphibole
Site name: Petit du Fresnoy
Light type: Cross-Polarized Light
Magnification: 100
Submitted by: Val Stanley
Notes: none
Image Tags: none
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Unique Identification: Amphibole
Site name: Joseph Lake
Light type: Plane-Polarized Light
Magnification: 400
Submitted by: Val Stanley
Notes: none
Image Tags: none
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Unique Identification: Amphibole
Site name: Joseph Lake
Light type: Cross-Polarized Light
Magnification: 400
Submitted by: Val Stanley
Notes: none
Image Tags: none
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Unique Identification: Amphibole
Site name: Fish Lake, Kenai Peninsula, Alaska
Light type: Plane-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Magmatic amphibole phenocryst with a quenched volcanic glass rind. Isotropic glass visible as an irregular transparent fringe along grain boundaries.
Image Tags: prismatic ferromagnesian amphibole colored mafic-mineral moderate-birefringence quenched-rind volcanic-glass
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Unique Identification: Amphibole
Site name: Fish Lake, Kenai Peninsula, Alaska
Light type: Cross-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Magmatic amphibole phenocryst with a quenched volcanic glass rind. Isotropic glass is extinct in cross-polarized light but visible as optical distortion on the birefringent surface of the grain.
Image Tags: prismatic ferromagnesian amphibole colored mafic-mineral moderate-birefringence quenched-rind volcanic-glass
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Unique Identification: Amphibole
Site name: Yellowstone
Light type: Plane-Polarized Light
Magnification: 630
Submitted by: Val Stanley
Notes: Blue-to-green amphibole, rounded and worn
Image Tags: blue-green
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Unique Identification: Amphibole
Site name: not specified
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: Guy Rothwell
Notes: Rounded hornblende prism and crystal fragment, pleochroic in greens, prismatic crystal-fragment
Image Tags: none
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Unique Identification: Amphibole
Site name: not specified
Light type: Plane-Polarized Light
Magnification: 100
Submitted by: Guy Rothwell
Notes: AE 326 100 + 150, amphibole broken crystals cleavage fragments pleochroic
Image Tags: none
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Unique Identification: Amphibole
Site name: not specified
Light type: Plane-Polarized Light
Magnification: 100
Submitted by: Guy Rothwell
Notes: AE 326 100 + 150, amphibole broken crystals cleavage fragments pleochroic
Image Tags: none
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Unique Identification: Amphibole
Site name: not specified
Light type: Plane-Polarized Light
Magnification: 100
Submitted by: Guy Rothwell
Notes: AE 326 100 + 150, amphibole broken crystals cleavage fragments pleochroic
Image Tags: none
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Unique Identification: Amphibole
Site name: not specified
Light type: Plane-Polarized Light
Magnification: 400
Submitted by: Guy Rothwell
Notes: pleochroic in greens, amphibole broken crystals cleavage fragments pleochroic
Image Tags: none
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Unique Identification: Amphibole
Site name: Southeast flank of Nicaragua Rise, Caribbean Sea (15 52.72 N, 74 36.47 W)
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: Guy Rothwell
Notes: Rounded hornblende prism, pleochroic in greens, prismatic crystal-fragment
Image Tags: none
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Unique Identification: Amphibole
Site name: Mubwindi wetland
Light type: Scanning Electron Micrograph
Magnification: 3000.0
Submitted by: Mark Shapley
Notes: Prismatic amphibole; detrital
Image Tags: prismatic good-cleavage hexagonal hornblende SEM
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