B.blog

Friday, March 4, 2016

DIAMOND MINE

diamons:

Thursday, December 31, 2015

Wednesday, November 25, 2015

Rocks of the Alphabet

ACANTHITE (with silver threads)

BABINGTONITE

CACOXENITE

DANBURITE

EDENITE

FAYALITE

GADOLINITE

HACKMANITE images

IDOCRASE

JADE

KAMMERERITE

LABRADORITE images

MACPHERSONITE images

NAGYAGITE

OBSIDIAN

PACHNOLITE images

QUARTZ

RAITE

SAFFLORITE images

TAAFFEITE

ULEXITE

VALENTINITE

WALPURGITE images

XENOTIME

YUKSPORITE images

ZEUNERITE

ACANTHITE (with silver threads)
BABINGTONIT
CACOXENITE
DANBURITE
EDENITE
FAYALITE
GADOLINITE
HACKMANITE
IDOCRASE
JADE
KAMMERERITE
LABRADORITE
MACPHERSONITE
NAGYAGITE
OBSIDIAN
PACHNOLITE
QUARTZ
RAITE
SAFFLORITE
TAAFFEITE
ULEXIT
VALENTINITE
WALPURGITE
XENOTIME
YUKSPORITE
ZEUNERITE

Tuesday, November 24, 2015

Igneous rocks

Brennan

These are some interesting facts about igneous rocks.

Igneous rocks are liquid minerals, which have been crystallized. The crystals from the liquid rock connect like a jigsaw puzzle, which crystallizes into igneous rock.

Lava cooled instantly form natural glass. Glass is disordered atoms frozen so no crystals form. Glass is part of many igneous rocks (e.g., lava flows),and pyroclastic igneous rocks.

Some igneous rocks form during volcanic eruption. Eruptions eject molten igneous rocks, partially molten, and non-molten rock. The material solidifies into hard mass called pyroclastic igneous rock.

Rocks with a fast cooling history are called fine-textured igneous rocks. Slow cooling (which usually occurs deep underground) promotes large crystals. Rocks with slow cooling history are called coarse-textured igneous rocks.

The texture of the rock (defined as the size of crystals in the rock) is related to the cooling rate.Rapid cooling menes the formation of small crystals, which are too small for the naked eye to see. Slow cooling (which usually occurs deep underground) promotes large crystals.