Tool for Microscopic Identification Home

 

Show UniqueIdentification

Id 71
Identification Type Mineral
Name Tourmaline
Distinguishing Features Prismatic
Pleochroic
Heavy-mineral
Description Transparent, variety of colors or colorless. Pleochroic (variable with composition). Moderate birefringence giving vivid colors. Elongate prismatic crystals to rounded grains. Moderate to high relief. Straight extinction. Often has inclusions.
Tags silicate
moderate-birefringence
elongate
high-relief
External Resources Tourmaline on MinDat
Imposters
Images
Unique Identification: Tourmaline
Site name: Tanners
Light type: Plane-Polarized Light
Magnification: 400x
Submitted by: Amy Myrbo
Notes: prismatic blunt-ended faceted
Image Tags: none
Unique Identification: Tourmaline
Site name: Tanners
Light type: Cross-Polarized Light
Magnification: 400x
Submitted by: Amy Myrbo
Notes: prismatic blunt-ended faceted
Image Tags: none
Unique Identification: Tourmaline
Site name: Arthurs Lake
Light type: Plane-Polarized Light
Magnification: 630
Submitted by: Val Stanley
Notes: none
Image Tags: black euhedral
Unique Identification: Tourmaline
Site name: Arthurs Lake
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: not specified
Notes: none
Image Tags: pleochroic
Unique Identification: Tourmaline
Site name: Arthurs Lake
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: not specified
Notes: none
Image Tags: pleochroic
Unique Identification: Tourmaline
Site name: Arthurs Lake
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: not specified
Notes: none
Image Tags: pleochroic
Unique Identification: Tourmaline
Site name: Arthurs Lake
Light type: Cross-Polarized Light
Magnification: not specified
Submitted by: not specified
Notes: none
Image Tags: none