- Grossular is a calcium-aluminium species of the garnet group of minerals. It has the chemical formula of Ca3Al2(SiO4)3 but the calcium may, in part, be replaced by ferrous iron and the aluminium by ferric iron. The name grossular is derived from the botanical name for the gooseberry, grossularia, in reference to the green garnet of this composition that is found in Siberia. Other shades include cinnamon brown (cinnamon stone variety), red, and yellow. Grossular is a gemstone.
- Mount Si Natural Resources Conservation Area (NRCA) (summitpost.org)
The Mount Si Natural Resources Conservation Area (NRCA) is one of the most climbed regions of Washington State. The centerpiece of the area is a steep, rugged mountain ridge spanning across the Mount Si NRCA mostly west-east (with a couple of short offshoot ridges and highpoints). Although most recreational use occurs on popular destinations Mount Si, Little Si, and Mount Teneriffe, the lesser known peaks of the area (Green Mountain, Dixie Peak, Blowdown Mountain, and Crater Lake Mountain) also offer substantial recreational opportunities for outdoor enthusiasts.