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Id 186
Identification Type Mineral
Name Barite
Distinguishing Features low-birefringence
low-to-moderate relief
prismatic
Description Recognized rarely as a diagenetic phase in minerotrophic peatland settings, where it occurs as colorless, prismatic or tabular euhedra with moderate relief and low birefringence. Also may occur in saline lake settings as an evaporite phase.
Tags prismatic
elongated
moderate-relief
low-birefringence
diagenetic
External Resources Barite, baryte
Imposters Apatite

Gypsum

Images
MUB17-2C-5L-1_64cm_630baritepp_2-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Plane-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic
MUB17-2C-5L-1_64cm_630baritecp_2-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Cross-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic
MUB17-2C-5L-1_64cm_630baritepp-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Plane-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic
MUB17-2C-5L-1_64cm_630baritecp-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Cross-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic
MUB17-2C-5L-1_64cm_630baritepp_3-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Plane-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic
MUB17-2C-5L-1_64cm_630baritecp_3-600.jpg
Unique Identification: Barite
Site name: Mubwindi Swamp, Uganda
Light type: Cross-Polarized Light
Magnification: 630.0
Submitted by: Mark Shapley
Notes: Barite from a ferric tropical peatland. Ba-S compositions determined by EDX on numerous individual grains. Prismatic grains show low birefringence and moderate relief, variable terminations, and and were initially mistaken for apatite.
Image Tags: low-birefringence moderate-relief diagenetic prismatic

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