Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. The specific gravity ranges from 2.68 to 2.72. The streak is white, like most silicates. The refractive index ranges from 1.559 to 1.573. Twinning is common. As with all plagioclase members, the crystal system is triclinic, and three directions of cleavage are present, two of which form nearly right angle prisms. It occurs as clear, white to gray, blocky to lath shaped grains in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites.
Occurrence
The geological type area for labradorite is Paul's Island near the town of Nain in Labrador, Canada. It has also been reported in Norway and various other locations worldwide.
Labradorite occurs in mafic igneous rocks and is the feldspar variety most common in basalt and gabbro. The uncommon anorthosite bodies are composed almost entirely of labradorite. It also is found in metamorphic amphibolites and as a detrital component of some sediments. Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite.
Podcasts:
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by Riot
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by Elf
Liberty
by: RiotRunning the cameras on what they are waiting to say
Fixing the picture to who you will gather and pray
Some will protest and some will defy in the night
Some will cry for an ending to come, waiting to let them selves go
Liberty, dying to set yourselves free
In your hour of darkness your fighting for freedom to be
Liberty, hurtling towards victory, from the gutters and gate
Posts your children are coming to see liberty
Controlling you mind, supressing your thoughts and beliefs
Crushing your senses conormities all that is real
Sound the call in the morning you march to the sword
paying prices for what you have done, wanting to let yourself go
Liberty, dying to set yourselves free, standing one and for all
You must sacrifice all that you see.
Liberty, hurtling towards victory
Only god will convince them for one is for all to be free
Liberty yea
Sound the call in the morning you march to the sword
paying prices for what you have done, wanting to let yourself go
Liberty, dying to set yourselves free
In your hour of darkness your fighting for freedom to be
Liberty, hurtling towards victory, from the gutters and gate