Khondalite
A rock subtype
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This term is a bit nebulous.
It has been used in Tomkeieffs Dictionary of petrology for:
1. a sillimanite quartzite
2. a variety of pantellerite (an alkali rhyolite)
3. and also the khondalite series is used for a series of metamorphic rocks including garnet-quartz-sillimanite rocks
Wikipedia lists it as a quartz-manganese rich garnet-rhodonite schist.
Other geological references say Khondalites are essentially graphite-bearing garnetiferous biotite gneisses.
The term was introduced by Walker in 1902 to describe a garnet-sillimanite-quartz-feldspar gneiss with or without graphite from east-central India. The rock was named after an aboriginal tribe called “Khond”, who live there, and Walker was helped by them during the field work. Hence, he proposed to honor them by introducing the term.
It has been used in Tomkeieffs Dictionary of petrology for:
1. a sillimanite quartzite
2. a variety of pantellerite (an alkali rhyolite)
3. and also the khondalite series is used for a series of metamorphic rocks including garnet-quartz-sillimanite rocks
Wikipedia lists it as a quartz-manganese rich garnet-rhodonite schist.
Other geological references say Khondalites are essentially graphite-bearing garnetiferous biotite gneisses.
The term was introduced by Walker in 1902 to describe a garnet-sillimanite-quartz-feldspar gneiss with or without graphite from east-central India. The rock was named after an aboriginal tribe called “Khond”, who live there, and Walker was helped by them during the field work. Hence, he proposed to honor them by introducing the term.
Unique Identifiers
Mindat ID:
53907
Long-form identifier:
mindat:1:1:53907:6
GUID
(UUID V4):
(UUID V4):
671b92dc-1727-4737-a343-87573e9dc538
Classification of Khondalite
- Rock
- Metamorphic rock
- Schist
- Khondalite
- Schist
- Metamorphic rock
Mineralogy of Khondalite
Essential minerals - these are minerals that are required within the classification of this rock:
| Garnet Group | X3Z2(SiO4)3 |
| Rhodonite | CaMn3Mn[Si5O15] |
| Silica > Quartz | SiO2 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Feldspar | A petrological term for Feldspar Group. |
| Graphite | C |
| Sillimanite | Al2(SiO4)O |
Internet Links for Khondalite
mindat.org URL:
https://www.mindat.org/min-53907.html
Please feel free to link to this page.
Please feel free to link to this page.
References for Khondalite
Reference List:
