Post by punamujadeBrazil on Oct 8, 2004 12:30:58 GMT -5
SAMPLES JADE FREE!
IMPERIAL JADE,JADEÍTE,NEFRITE FOR SALE!
IF IN CASE THAT YOU IT WANTS TO DIRECTLY BUY the JADE Of the OWNER Of The ONLY MINE In the BRAZIL, Then IT INSTALLS ITS ORDER HERE.
Jade is a commercial term encompassing green, white, black or yellow-brown jadeite and nephrite. Jadeitite is a rock that consists essentially of jadeite (sodium-rich, high-pressure pyroxene), whereas nephrite consists of prismatic to acicular amphiboles of the tremolite-actinolite series forming bundles that are randomly oriented and interlocked.
Jade has been used since Neolithic times for jewelry and tool making. Today, the best material is used as gemstones. Large quantities are used for carving and ornamental stone or for table tops. Industrial grade material is used for tile making.
The world jade market is estimated at 300 tonnes per year. The price of raw jade varies from less than $10 to $100 per kilogram depending on quality and quantity.
Punamu Mineração Ltda is a Brazilian Jade Mining company with registered mining reserves of 5.5 million square meters of high quality jadeite and nephrite. The mine is located at the south east of the State of Minas Gerais, Brazil, near the city of Alto Rio Doce. The two pictures shown here were nephrites found in our mining operation.
PHYSICAL AND CHEMICAL PROPERTIES
For the jeweler and sculptor, hardness is a vey important property. It is the possibility to break into a mineral. The Mohs' hardness scale measures the hadness of a rock. It goes from 1 to 10. A mineral with the hardness of 1 can be scratched with the finger nail. The diamond with a hardness of 10 cannot be scratched. Jade have a hardness between 6 and 7 on the Mohs scale. Is resistant towards all acids. The crystal system is monoclinical.
Many minerals can be plited throught an impact with a hammer. A mineral may be splited well in one direction, but not in another. There are also minerals without a certain fissileness. They break casual where we can see the break.
The color is another important property. There are colorless minerals like the rock crystal and the diamond. Quartzs like the amethyst have color because of admixtures. They are colored minerals. A third group of minerals which have their own color, because of their chemical and physical properties.
The gloss of a mineral is another property. There is diamond gloss, glass glos, fat gloss and metal gloss.
The transparency is also very important. Clear minerals have high transparency, which is caused by the chemical and physical properties of the mineral.
Jade's Chemical Properties
Jadeite Nephrite
Chemical formula NaAl[Si2O6]
Ca2(Mg, Fe)5[(OH, F)|Si4O11]2
Mineral class silicates silicates
Crystal system monoclinical monoclinical
Hardness 6 to 6.5 6 to 6.5
Density 2.9 g/cm3 to 3.1 g/cm3 2.9 g/cm3 to 3.1 g/cm3
Color green,white or yellow green,white or yellow
Line color white white
Gloss glass gloss, fat gloss glass gloss, fat gloss
Break fragment fragment
Fissileness none none
IMPERIAL JADE,JADEÍTE,NEFRITE FOR SALE!
IF IN CASE THAT YOU IT WANTS TO DIRECTLY BUY the JADE Of the OWNER Of The ONLY MINE In the BRAZIL, Then IT INSTALLS ITS ORDER HERE.
Jade is a commercial term encompassing green, white, black or yellow-brown jadeite and nephrite. Jadeitite is a rock that consists essentially of jadeite (sodium-rich, high-pressure pyroxene), whereas nephrite consists of prismatic to acicular amphiboles of the tremolite-actinolite series forming bundles that are randomly oriented and interlocked.
Jade has been used since Neolithic times for jewelry and tool making. Today, the best material is used as gemstones. Large quantities are used for carving and ornamental stone or for table tops. Industrial grade material is used for tile making.
The world jade market is estimated at 300 tonnes per year. The price of raw jade varies from less than $10 to $100 per kilogram depending on quality and quantity.
Punamu Mineração Ltda is a Brazilian Jade Mining company with registered mining reserves of 5.5 million square meters of high quality jadeite and nephrite. The mine is located at the south east of the State of Minas Gerais, Brazil, near the city of Alto Rio Doce. The two pictures shown here were nephrites found in our mining operation.
PHYSICAL AND CHEMICAL PROPERTIES
For the jeweler and sculptor, hardness is a vey important property. It is the possibility to break into a mineral. The Mohs' hardness scale measures the hadness of a rock. It goes from 1 to 10. A mineral with the hardness of 1 can be scratched with the finger nail. The diamond with a hardness of 10 cannot be scratched. Jade have a hardness between 6 and 7 on the Mohs scale. Is resistant towards all acids. The crystal system is monoclinical.
Many minerals can be plited throught an impact with a hammer. A mineral may be splited well in one direction, but not in another. There are also minerals without a certain fissileness. They break casual where we can see the break.
The color is another important property. There are colorless minerals like the rock crystal and the diamond. Quartzs like the amethyst have color because of admixtures. They are colored minerals. A third group of minerals which have their own color, because of their chemical and physical properties.
The gloss of a mineral is another property. There is diamond gloss, glass glos, fat gloss and metal gloss.
The transparency is also very important. Clear minerals have high transparency, which is caused by the chemical and physical properties of the mineral.
Jade's Chemical Properties
Jadeite Nephrite
Chemical formula NaAl[Si2O6]
Ca2(Mg, Fe)5[(OH, F)|Si4O11]2
Mineral class silicates silicates
Crystal system monoclinical monoclinical
Hardness 6 to 6.5 6 to 6.5
Density 2.9 g/cm3 to 3.1 g/cm3 2.9 g/cm3 to 3.1 g/cm3
Color green,white or yellow green,white or yellow
Line color white white
Gloss glass gloss, fat gloss glass gloss, fat gloss
Break fragment fragment
Fissileness none none
