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Rhyolitoid

A rock classification type
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09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
06241100017271952599011.jpg
Rhyolite

Southern Urals, Ural Mountains, Russia
01558650017271952604001.jpg
Rhyolite

Queimado quarry, Serra, Espírito Santo, Brazil
09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
06241100017271952599011.jpg
Rhyolite

Southern Urals, Ural Mountains, Russia
01558650017271952604001.jpg
Rhyolite

Queimado quarry, Serra, Espírito Santo, Brazil
09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
06241100017271952599011.jpg
Rhyolite

Southern Urals, Ural Mountains, Russia
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About RhyolitoidHide

Felsites (acid volcanic rocks) tentatively identified as rhyolite, with felsic minerals comprising >20% quartz and alkali feldspar/plagioclase 40-100%


Unique IdentifiersHide

Mindat ID:
50639
Long-form identifier:
mindat:1:1:50639:7

Classification of RhyolitoidHide

QAPF_V_2,3.png

Rhyolitic rocks appear in fields 2 and 3 in the QAPF diagram.

TAS_R.png

Rhyolitic rocks are found in field 'R' in the TAS diagram.

Sub-divisions of RhyolitoidHide

Mineralogy of RhyolitoidHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Silica > QuartzSiO2

Age distributionHide

Recorded ages:
Neoproterozoic to Quaternary : 771 ± 2 Ma to 0 Ma - based on 20 recorded ages.

Synonyms of RhyolitoidHide

Internet Links for RhyolitoidHide

References for RhyolitoidHide

Reference List:
Quick NavTopAbout RhyolitoidUnique IdentifiersClassification Sub-divisions Mineralogy Age distributionSynonymsInternet Links References
 
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