*** CACHE IS NOT AT
THE LISTED COORDINATES ***
BACKGROUND:
Friedrich Mohs, born in 1773 in Gernrode, Germany, studied
chemistry, mathematics and physics at the University of Halle. He
also studied at the Mining Academy in Freiberg, Saxony. After
assuming the position of mine foreman in 1801, Mohs moved to Austia
in 1802, where he was employed in trying to identify the minerals
in the collection of a banker.
In 1812 Mohs moved to Graz to take a position with Archduke
Johann in his newly established museum and science academy, which
was subsequently divided into the Joanneum and the Graz University
of Technology. It was during this period at the Joanneum that Mohs
developed his mineral hardness scale.
As part of this task, he started classifying minerals by their
physical characteristics, in spite of their chemical composition,
as had been done traditionally. This emphasis on physical
characteristics was at odds with the prevailing chemical
systematics. However, both Theophrastus and Pliny the Elder had
compared the relative hardness of minerals known to them in the
ancient world, including diamond and quartz. They knew that diamond
could scratch quartz, so showing it to be harder.
This became the basis of the hardness scale developed by Mohs.
Minerals are now classified by chemical characteristics, but the
physical properties are still useful in field examination.
THE CACHE:
N 30°
[Mg3Si4O10(OH)2][KAlSi3O8].[Al2O3][CaSO4·2H2O][Mg3Si4O10(OH)2]
W 97°
[CaF2][CaF2].[Mg3Si4O10(OH)2][Mg3Si4O10(OH)2][CaCO3]
You'll be looking for a camouflaged Witz case hanging above a
theme-appropriate retainer. If you look in just the right direction
from Ground Zero, you'll catch a glimpse of the southern end of
DKR-Memorial Stadium. Enjoy!
