The Mineral goosecreekite
Goosecreekite is a rare and coveted member of the zeolite group. It is a relatively new mineral, only being recognized by the IMA as a distinct mineral species in 1980. Goosecreekite is named after its type locality at the New Goose Creek Quarry in Leesburg, Virginia.
Chemical Formula
CaAl2Si6O16 · 5(H2O)
Crystal System
Monoclinic
Properties
Streak
Colorless |
Hardness
4 |
Transparency
Transparent to translucent |
Specific Gravity
2.3 - 2.5 |
Luster
Vitreous, pearly |
Cleavage
1,1 |
Fracture
Uneven |
Tenacity
Brittle |
Crystal Habits
Crystals are in rounded prismatic groups, and in globular or hemispherical, ball-like
formations. Crystals are usually in wedge-shaped crystals. Rounded or globular forms usually have individually recognizable crystals on the rounded edges, which are often spiky or grainy.
Uses
Goosecreekite is a rare mineral that is highly desired by collectors. Its only practical use is as a high-end mineral for collectors, especially zeolite collectors.
Noteworthy Localities
The most significant locality for Goosecreekite is Jalgaon, Maharashtra, India. Other localities in the state of Mahrashtra are Nasik, Pune (Poona), and Mumbai. In the U.S., micro crystals of Goosecreekite were found in the New Goose Creek quarry, Leesburg, Loudoun County, Virginia.