Crime levels are low, but street crime occurs, particularly in larger towns.
The intermediate composition, (Mg, Fe)Si O3, has historically been known as hypersthene, although this name has been formally abandoned and replaced by orthopyroxene.
When determined petrographically or chemically the composition is given as relative proportions of enstatite (En) and ferrosilite Monoclinic cummingtonite is compositionally similar and polymorphic with orthorhombic anthophyllite, which is a much more common form of magnesium-rich amphibole, the latter being metastable.
Silicate minerals are rock-forming minerals made up of silicate groups.
They are the largest and most important class of rock-forming minerals and make up approximately 90 percent of the Earth's crust. It is typically almost colorless in thin section, but some lawsonite is pleochroic from colorless to pale yellow to pale blue, depending on orientation.
Ilvaite crystallizes in the monoclinic system in black prismatic crystals and columnar masses. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. It occurs in contact metamorphic rocks and skarn ore deposits. Ilvaite was first described in 1811 on the island of Elba and the name ilvaite from the Latin name ilva of the island. Commonly encountered species and varieties: Schorl species: Brownish black to black—schorl Dravite species: from the Drave district of Carinthia Dark yellow to brownish black—dravite Elbaite species: named after the island of Elba, Italy Red or pinkish-red—rubellite variety Light blue to bluish green—Brazilian indicolite variety (from indigo) Green—verdelite or Brazilian emerald variety Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (Mg Si O3) - ferrosilite (Fe Si O3).
The magnesium rich members of the solid solution series are common rock-forming minerals found in igneous and metamorphic rocks.
Cummingtonite shares few compositional similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite.
There is little solubility between these minerals due to different crystal habit and inability of substitution between alkali elements and ferro-magnesian elements within the amphibole structure.
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Since 1827 the Jägerhorn has established itself as a social and cultural icon of Zagreb, noted by its association to numerous Croatian historical figures such as Ljudevit Gaj and Ban Josip Jelačić, as well as appearances in several poems, theater productions and films.
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