Pure opaque-white crystalline Aragonite forming a cloud-like crystals in a stalagtitic growth. In cross section there are rings of growth, each ring representing the unique conditions present when the carbonate was deposited.
During Tom's recent trip to Michigan he visited the A.E. Seaman mineral museum and there was a similar Bisbee Aragonite on display there. See old Dick Bideaux label.
Aragonite
Formula
CaCO3
Crystal System
Orthorhombic
Crystal Habit
Pseudo Hexagonal, Columnar, Fibrous
Cleavage
Distinct, None, None
Luster
Vitreous (Glassy)
Color
colorless, white, gray, yellowish white, reddish white