Difference between revisions of "Quartzite"
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(New page: '''Quartzite''' is different from the rock quartz. Quartzite is a metamorphic rock that forms when sandstone is heated under pressure deep within the Earth. When quartzite is pur...) |
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'''Quartzite''' is different from the rock quartz. Quartzite is a [[metamorphic rock]] that forms when sandstone is heated under pressure deep within the [[Earth]]. When quartzite is pure is most often white or greyish. Ironoxide can be reddish or pinkish is Iron oxide is present. Different mineral impurities can give quartzite different colours. [[Fossil]]s are rare in quartzite. Quartzite resists chemical weathering and therefore forms ridges and hilltops when less resistant rocks round it have eroded away. Quartzite does not form good soils therefore quartzite ridges are likely to be bare or to have poor soil and sparse vegetation. | '''Quartzite''' is different from the rock quartz. Quartzite is a [[metamorphic rock]] that forms when sandstone is heated under pressure deep within the [[Earth]]. When quartzite is pure is most often white or greyish. Ironoxide can be reddish or pinkish is Iron oxide is present. Different mineral impurities can give quartzite different colours. [[Fossil]]s are rare in quartzite. Quartzite resists chemical weathering and therefore forms ridges and hilltops when less resistant rocks round it have eroded away. Quartzite does not form good soils therefore quartzite ridges are likely to be bare or to have poor soil and sparse vegetation. | ||
| + | [[Category:Geology]] | ||
Revision as of 02:58, November 29, 2008
Quartzite is different from the rock quartz. Quartzite is a metamorphic rock that forms when sandstone is heated under pressure deep within the Earth. When quartzite is pure is most often white or greyish. Ironoxide can be reddish or pinkish is Iron oxide is present. Different mineral impurities can give quartzite different colours. Fossils are rare in quartzite. Quartzite resists chemical weathering and therefore forms ridges and hilltops when less resistant rocks round it have eroded away. Quartzite does not form good soils therefore quartzite ridges are likely to be bare or to have poor soil and sparse vegetation.