Detrital sedimentary rock consists of the cemented-together fragments of minerals and other rocks, primarily clay, quartz, feldspar, and mica. The most abundant detrital sedimentary rock is shale, a crumbly rock made of extremely fine, microscopic-sized particles.xposed rock is the collector's fruitful ground. Many interesting minerals and fossils can be found on weathered slopes, riverbanks, and cliff faces. Human-made excavations such as road cuts and construction or quarry sites can be excellent sites for mineral hunting.
For other uses of MSG, see MSG (disambiguation). Monosodium glutamate (MSG, also known as sodium glutamate) is the sodium salt of glutamic acid, one of the most abundant naturally occurring non-essential amino acids. Monosodium glutamate is found naturally in tomatoes, cheese and other foods.
GLUTAMATE AS NEUROTRANSMITTER. Glutamic acid (abbreviated as Glu or E) is one of the 20-22 proteinogenic amino acids, and its codons are GAA and GAG. It is a non-essential amino acid with a side chain carboxylic acid functional group. The carboxylate anions and salts of glutamic acid are known as glutamates.Glutamate is the most abundant excitatory neurotransmitter in the nervous system and it plays a key role in long-term potentiation. It is involved in most aspects of normal brain functions, including cognition, memory and learning.he glutamate released in the synaptic cleft binds to its receptor on the postsynaptic terminals, and it produces an excitatory postsynaptic potential (EPSP). The glutamate receptors can be divided into two groups according to the mechanism by which their activation gives rise to a postsynaptic current.