Interesting descriptions and explanations
of various rocks and minerals

page 2


Sikhote-Alin Meteorite


The Sikhote-Alin Meteorite fell at 10.38 a.m. local time on February 12, 1947 in Eastern Siberia.  In full daylight, this meteorite broke apart in the Earth's atmosphere. Appearing as a flaming fireball trailed by a smoke tail, the phenomenon flashed different colors as it made its way across the Russian sky.  "The light was reported as being as bright as the sun.  The sound wave scared thousands of people as it passed. 

About 3.5 miles up from the ground, the largest mass broke apart in a violent explosion. This is a very low altitude for such and event to happen and is highly unusual.  Many fragments were detached early in flight, these proceeded as "individuals" along with the main mass.  Some of these show orientation or flighty marks. 

When the main mass exploded, it created specimens that are referred to as "shrapnel". The meteorites fell in a elliptical circle of about 1.6 kilometer on snow covered Sikhote-Alin Mountains.  Some fell in trees while others helped create 122 impact craters with diameters from 26 to 0.5 meters and with depths measuring nearly twice the diameter of the craters.  

The main mass is an amazing 1,745 kilogram specimen now on display in Moscow,  many other specimens are in museums around the world.  The meteorite itself is classified in the Group 11B, with about 5.9% nickel and includes minerals such as kamacite, taenite, plessite, schreibersite crystals, rhabites, troilite and chromite.  The majority of this meteorite is of coarse iron.

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Campo Del Cielo Meteorite


The Campo Del Cielo Iron Meteorite is from Gran Chaco Gualamba, Argentina.   These Campo meteorites were first found in 1576.  It probably impacted the earth nearly 6000 years ago leaving an extensive strewn field and more than 12 craters.  The Campo Del Cielo Meteorites are a Coarse Octahedrite, Type 1A, (3mm crystal).  They consist of an average composition of 92% Iron, 6% Nickel and other rare minerals with silicate inclusions.

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Blue Celestite


Did you know that Celestite is a mineral form of strontium sulfate which is a metal.
The metal strontium is mixed with carbon and sulfur and then used for the red fire in fireworks, flares and signal shells.

Strontium is also used in the nuclear industry as well as the manufacture of rubber, paint, electrical batteries and in the refining of beet sugar.

Celestite is a softer mineral having a hardness of 3 to 3.5 and therefore can easily be scratched with a knife blade, also it is slightly soluble in water.

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