Introducing the RH-150AUTO
H-150AUTO Portable Hardness Tester
The RH-150AUTO is a
modular, portable hardness
tester (Rockwell). It performs
true Rockwell tests, all in
a portable package!
Archive for Minerals

Corundum

Corundum is a mineral that is recognized for its extreme hardness. On Mohs hardness scale, Corundum has a hardness of nine. It is the third hardest mineral, with diamond and moissanite at first and second.  It’s hardness makes this mineral a great abrasive and a…

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Mineral Harder Than Diamond

Diamond is placed at 10 on Mohs Hardness Scale making it the hardest mineral on the scale.  So, is there any mineral harder than Diamond?  The answer is yes.  Although a mineral harder than diamond is rare to come by, they do exist.  Wurtzite, boron…

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Barite

Barite is a mineral that is used for a number industrial, medical, and manufacturing applications due to its high specific gravity.  It has a specific gravity of 4.5, which is exceptional for a mineral that is nonmetallic.  This is the reason for the name Barite since…

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Kyanite

Kyanite can be recognized by its beautiful bluish greenish coloring.  It is found most frequently in metamorphic rocks.  What is interesting about kyanite is that is has a variable hardness.  Kyanite’s crystals have a hardness of between 4.5 to 5 on Mohs hardnss scale when…

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Galena

Galena is easily recognizable by its silver and metallic look.  A person can also notice galena by its square shape because of its perfect cleavage which allows it to break apart into cubes.  Galena (PbS) is a lead sulfide mineral that is found in many…

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Rhodonite

Rhodonite is an uncommon silicate mineral found around the world in a few small deposits.  Massachusetts made rhodonite their state gem.  It comes in a pink or red color and often contains iron, magnesium, and calcium.  Some of rhodonite’s physical properties include a hardness of…

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Calcite

Calcite is one of the most widely used minerals and has more uses than almost any other mineral.  It is used as the following: construction material abrasive agricultural soil treatment construction aggregate pigment pharmaceutical Luckily, calcite is very common and found all around the world. …

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Topaz

Topaz Gemstone Information The use of topaz started back in the Egyptian times and is still used today.  Topaz is an aluminum silicate that is made up of fluorine and hydroxyl.  Here are a few properties that Topaz possesses:   Color: The pure form of…

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Mineral Hints at Water Deep Inside Earth

What looked like a rough, worthless diamond was found by gem hunters in 2008 and scientists later found that the diamond contained a significant mineral.  Ringwoodlite is a mineral which only forms under extremely hot and pressurized environment.  Scientists found a microscopic trace of ringwoodite…

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Quartz Info and Facts

Quartz is the most abundant mineral on Earth’s surface and also one of the most useful.  Here area few facts about the mineral quarts: It is made up of one part silicon and two parts oxygen. Forms at all temperatures Highly resistant to weathering Has…

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