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The Mineral Rhodonite
rhodonite picture

rhodonite mineral picture

mineral rhodonite

The chemical name for Rhodonite is manganese inosilicate. It comes from the family of the  pyroxenoid group of minerals that crystallize in triclinic system.  Rhodonite crystals are frequently found in thick tabular shape, but are uncommon. Its prismatic cleavage is perfect, nearing a right angle. In part, manganese is frequently substituted by Iron, Calcium, and Magnesium and at times with Zinc, which at times may have a substantial presence. One of its varieties, called Bustamite is known to have as large as twenty percent calcium oxide.  Another zinciferous variety called Fowlerite contains seven percent zinc oxide.

Chemical Formula  
(Mn2+,Fe2+,Mg,Ca)SiO3(Mn2+,Fe2+,Mg,Ca)SiO3

Derivation of Name  
It gets its name from  the Greek “ῥόδος” Rhodos, or rosy.

Occurrence     
Rhodonite is known to have been used as an ornate stone. In the manganese and iron mines of Pajsberg close to Filipstad and Långban at Värmland, Sweden, minute radiant and transparent crystals (Pajsbergite) and cleavage stacks are found.

Gemology 
Rhodonite frequently comes with  black manganese oxide veins that run through its sample, imparting it an individual exterior of pink having black lines crisscrossing along with flower-like configuration all the way through. It is this variety that is most frequently utilized as gemstones, particularly in ornamental objects and beads. Large substantial pieces of Rhodonite with black streaks are frequently sliced and polished to make slabs for collectors.

 Source 
Large deposits are found at: Ural Mountains, Broken Hill, Australia; Russia; Langban, Menas Gerais, Brazil, Sweden, and Franklin and Massachusetts in New Jersey, USA.

Mineralogy   
Rhodonite is a good-looking mineral.  Because of its rose-pink color it is  distinguished easily and could only be mistaken for Rhodochrosite or the extraordinary mineral Pyroxmangite, MnSiO3. However Rhodochrosite comes with streaks of white minerals like Calcite and also reacts with acids, whereas Rhodonite does not  react with acids.  Crystals of Pyroxmangite are regularly twinned,  which is not so with crystals of Rhodochrosite.

Color           
Color is normally crimson to red or orange an, though also black at times.

Density 
Varies from 3.4 to 3.7

Hardness
5.5 to 6.5

Rhodonite Picture Rhodonite Minearl Rhodonite
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