Group of calcite crystals, some of them doubly terminated, showing shapes of the hexagonal prism and faces of the rhombohedron and scalenohedron. Between translucent to transparent and with an intense response to long-wave ultraviolet light with an orange color fluorescence and slight phosphorescence. They are disposed on a matrix of pyrite crystals along with some sphalerite and quartz.
ORIGIN: HUANZALA MINE, HUALLANCA, HUALLANCA DISTRICT, BOLOGNESI PROVINCE, ANCASH, PERU
