James St. John: Acanthite (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 1
James St. John: Acanthite (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 2
James St. John: Native silver in matrix (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 1
James St. John: Native silver in matrix (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 2
James St. John: Native silver in matrix (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 3
James St. John: Native silver in matrix (Imiter Silver Deposit, near-latest Neoproterozoic, ~550 Ma; Imiter Mine, Anti-Atlas Mountains, Morocco) 4