Physical Properties of Hornblende Mineral

Hornblende is a name that was given to a few different minerals that are a little bit complicated to differentiate in the customary ways. In these minerals the magnesium, iron and aluminum ions are able to freely substitute one another and form what has been set as separate minerals. These minerals therefore are known as magnesio hornblende, ferro hornblende, alumino ferro hornblende, and alumino magnesio hornblende. It is pretty evident to see that these minerals were named as such due to their chemistries even though there is not much to distinguish when they are on the field. Just keep in mind that that the minerals that have more iron in them are darker black and will most likely not be translucent. It is not that easy or common got find good crystals in hornblende and due to this it is not usually a collection mineral however it is a mineral that is very prevalent. This mineral usually looks black and quite opaque and is certainly not the most attractive of the minerals. There are nonetheless, a few specimens that are very unusual and that can be considered valuable specimens. Some of the crystals are able to grow to quite a large size, even up to several feet in length and almost a foot in width. Certain other specimens of hornblende can turn out to be acicular clusters or be extremely thin crystal aggregates. In many occasions a specimen that has more valuable mineral in it will be highlighted by the opaque black crystals of hornblende it has.