Graphite is nearly black while talc is nearly white.
talc
Graphite
Calcite, garnet, graphite, hematite, magnetite, mica, and talc.
Graphite and Talc
the softer mineral can be scratched by a harder mineral. Ex: talc is 1 and quartz is 7 so quartz can scratch talc
talc
Amethyst ,Graphite, talc, calcite, corrundum, flourite, ruby, etc.
schist
Graphite
Calcite, garnet, graphite, hematite, magnetite, mica, and talc.
it's graphite!!
Graphite and Talc
The most probable explanation is the specific structure of grouped crystals - a lamellar type.
Gypsum is soluble in water - Talc isn't
Talk about talc!
Yes. The most extreme examples of this would be the micas, and perhaps graphite. You may like to check whether talc also has this character.
the softer mineral can be scratched by a harder mineral. Ex: talc is 1 and quartz is 7 so quartz can scratch talc