The Kawartha Rock & Fossil Club
Located in Beautiful Peterborough, Ontario
Collected at the Malone Marble Quarry on our last trip, can anyone id the greenish yellow crystal, semi transparent. Don’t know if i will ever be able to expose it any more without damage.
The dark green colour would suggest Vesuvianite. If it is the very pale greenish mineral that you want to identify, it looks like a Calcite or Quartz cast of the Vesuiviante crystals. Have you done a hardness test on it?