Quartz is the most common mineral found at this site. It is found in both the ore deposit and in the surrounding country rocks. Most of it is massive; but in the ore deposit concentric plates of "cockscomb" crystals were formed, and the vuggy ore and gangue rocks contain vugs that are frequently lined with small to micro sized crystals. The latter situations are often hosts for "species of interest" here.
Habit:
Typical Trigonal prisms; in "cockscomb" parallel growth patterns (macro) and as small to micro-crystals in vugs.
Colour:
Milky white (macros) to clear (micros), often stained reds and blacks by Fe and Mn.
Luminescent properties:
none
Quality for species:
Poor for species, only of interest for locality collectors. (#)
Mascot Mine, Gorham, Coos County, New Hampshire, USA