AA - highest grade displaying three or more brilliant sharp colours; also considered to be a collection grade - found most often in one of a kind designer pieces

is a fossilized shell which shows a rainbow of shifting interference colors in beautiful mosaic type patterns it is formed from the mineralized remains of an upper Cretaceous fossil called the Ammonite Placenticeras (http://www.ammolite.com/faq.htm) the gemstone material is formed from the compacted remains of the shell which was exposed to eons of elemental movement, mineralization, intense heat and pressure. (http://www.ammolite.com/faq.

by law, intact fossils cannot be broken for specimens, and each pit mine must be filled and reclaimed before another pit mine can be opened

it is based on the intensity of the colors of fire with reds, yellows, oranges, golds and greens the most common colors

the thin aragonite layer of the ammonite shell is often assembled into triplets with a protective quartz top and a shale backing

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The grading policy for a course can be found in its syllabus, which can be accessed by visiting the Course Search & Registration page, searching for the course, and then clicking on the resulting link.

You will be graded on assignments and quizzes throughout the course, participation and based on your final exam. Final exams will only represent 15% to 25% of the course grade, depending on the course. Final exams must be taken on-site at an approved testing center. Grading.

exposed ammonite which is easily bleached by the sun and damaged by frost is usually of poor quality (http:/www.ammonite.net/history1.htm)

The ammonite would have had to die close to the shoreline of the Bearpaw Sea, near an inflow of fresh water. The water somehow changed the chemistry of the shell, possibly depositing iron on it, which accounts for the greens in the stone. The shell would then have had to been crushed after burial.

Legend tells of a blackfoot woman who discovered the stone while searching for firewood. During a particularly harsh winter, the buffalo had disappeared and the tribe was starving. While searching in the deep snow, the young women heard beautiful singing and followed the voice to an ammolite stone under a cottonwood tree. The stone told her it was powerful medicine and if she would take it back to the tribe it would provide food for the blackfoot.

the process that turns a fossil shell into ammolite is not clearly understood, but the result is similar to opal (http://www.islandnet.com/~mineral/jewel6.htm) brilliant patterns of color occur when tiny spherules on the surface split white light, in the same way a rainbow does (http://www.islandnet.com/~mineral/jewel6.htm)

Easy - suitable for anyone able to ride a bike. Low daily distances, and few steep climbs. These would be the most suitable routes for families with young children. Moderate - a little more fitness and familiarity with cycling is required. Daily distances may be longer and/or the route encounters a few more hills. These are still suitable for families, as long as the children are confident cyclists.

The first thing to keep in mind is that these are descriptions of the dry, cured leaf only. They have no necessary relation to the aroma, color, or flavor of the end product. It is possible to get a delicious cup from ugly, broken leaves; it is possible to get an awful cup from well-handled, beautiful whole leaves. But since you may have little information to work with other than the grade, let's look at the various grades.

Each teacher decides how exams are handled individually. We do RP out end end of term exams and end of year exams. The teacher may or may not grade you for the exams and for the year. The grading scale is as follows: