01 / 01NORTHERN GEOLOGICAL SUPPLIES
Streak Plates – Black
UNGLAZED BLACK PORCELAINUnglazed black porcelain streak tile with a hardness of approximately Mohs 6.5–7.0, essential for diagnostic powder testing of pale, white, and metallic minerals.
MaterialUnglazed high-density black porcelain
HardnessApprox. Mohs 6.5–7.0
Configuration, availability and delivery confirmed with your quotation.
01 / FIELD CAPABILITIES
Built for the task.
- Matte black unglazed surface provides maximum contrast for pale powders
- Mohs 6.5–7.0 hardness pulverizes all softer minerals to verify true streak
- Double-sided testing surface extends usable life in the field
- Easily cleaned with water and abrasive pad for repeated testing
02 / TECHNICAL DETAILS
Precision, specified.
- Material
- Unglazed high-density black porcelain
- Hardness
- Approx. Mohs 6.5–7.0
- Dimensions
- 50 × 50 mm (2 × 2 inches)
- Target minerals
- Light-colored, white, and reflective minerals (fluorite, talc, gypsum)
Key specifications and field-use details. Exact configuration may vary by model or selected variant.
Northern Geological Supplies
Comprehensive geological, mining, exploration tools, and sample testing supplies.
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