A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Fort Wayne varies throughout the year. The wetter season lasts 178 days, from March 27 to September 21, with a greater than 28% chance of a given day being a wet day.
The most common minerals are the silicates, as one would guess by looking at the abundances of the elements in the Earth's crust, but there is a great variety of minerals. Minerals are classified in many ways, including hardness, optical properties, crystal structure, etc.Shipman, et al.he most common minerals are the silicates, as one would guess by looking at the abundances of the elements in the Earth's crust, but there is a great variety of minerals. Minerals are classified in many ways, including hardness, optical properties, crystal structure, etc.
The olivine Mineral Series. Olivine is one of the most common minerals in the earth, and is a major rock forming mineral. Despite this, good specimens and large crystals are uncommon and sought after. Only few localities yield large examples of this mineral, although small and microscopic grains are found worldwide.he mineral Tephroite (Mn2SiO4), which many consider a member of the Olivine group, forms a series with Forsterite.There are other rarer members of the Olive group such as Tephroite. Composition. Magnesium iron silicate.