Page 51 - visitorGuide

Fossilized Shark Teeth

■ Sand-Selenite Bladed Crystals
These crystals, from Naica, Chihuahua, Mexico, formed in an arid, evaporitic
environment in sand-rich layers not far below Earth’s surface.Their bladed
shape is a typical crystal form of selenite, the colorless gypsum that cements
the sand grains together.
Purchased by the Society.

By exiting the Council Room from the single, southeast door, you will come upon an
atrium with a rock garden that features a serpentine boulder as described below.

■ Serpentine Boulder
This boulder is made up of metamorphic serpentine minerals that contain
high concentrations of magnesium and iron. This boulder, and another large
one in the flower garden near the front of the building, are from the Mother

Lode area on the western slope of the Sierra Nevada, California.
Collected by Christoph W.H. Hulbe and students from Sacramento City College. Ecologic concept from Helen L. Cannon, U.S.
Geological Survey, Denver, Colorado. Gifts from John A. Huberty, through Bennie W.Troxel, former science editor of the Society.

As you make your way back down the hall, on the right you will see five framed drawings.

■ J.J.Young Drawings
These are from the Report of Exploring Expedition from Santa Fe, New Mexi-
co, to the Junction of the Grand and Green Rivers, in 1859, by Captain J.N. Ma-
comb, which was published in 1876 by the U.S. Department of Engineering.
The drawings, by J.J.Young, are adapted from sketches by J.S. Newberry.
Gift from Edwin B. Eckel, U.S. Geological Survey, Denver, Colorado, and former executive secretary of the Society.

41SECOND FLOOR EXHIBITS