Clinker
A rock subtype
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About Clinker
i. According to Grapes (2006) Clinker is a hard, fused and/or partially melted sedimentary rock, with well preserved shaley texture, forming in burnt coal seams or bituminous sediments. More glassy, vesicular molten rock, that is sometimes incorrectly named scoria, should be called buchite. Characteristic features of clinker include a resemblance to pavement brick (klinkaerd) and a "metallic" sound when hit by a hammer. Clinker is the most common rocktype found in burning coal mining dumps and is usually red or pink, less commonly yellow or white in colour. It is usually composed of quartz, feldspars, mica and minor mullite.
White clinker-like rocks are sometimes called porcellanites, though this can have widely varying definitions.
Clinkers are often found fused together from various lithologies to form a pyrometamorphic breccia. They may also occur as xenoliths within recrystallised rocks called parabasalts.
Ref: ACSG, 2
ii. Coal that has been altered by an igneous intrusion. Compare with: core and natural coke
iii. Partially fused intermediate product, formed from limestone and claystones, used in the manufacture of portland cement.
iv. Fused or partly fused coal ash, a byproduct of combustion.
White clinker-like rocks are sometimes called porcellanites, though this can have widely varying definitions.
Clinkers are often found fused together from various lithologies to form a pyrometamorphic breccia. They may also occur as xenoliths within recrystallised rocks called parabasalts.
Ref: ACSG, 2
ii. Coal that has been altered by an igneous intrusion. Compare with: core and natural coke
iii. Partially fused intermediate product, formed from limestone and claystones, used in the manufacture of portland cement.
iv. Fused or partly fused coal ash, a byproduct of combustion.
Unique Identifiers
Mindat ID:
52541
Long-form identifier:
mindat:1:1:52541:7
GUID
(UUID V4):
(UUID V4):
c637e1ec-ec5f-4e0e-96c8-39fd017bc732
Classification of Clinker
Common Associates
Associated Minerals Based on Photo Data:
Internet Links for Clinker
mindat.org URL:
https://www.mindat.org/min-52541.html
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References for Clinker
Reference List:
Słupiec heap, Słupiec Mine, Nowa Ruda, Kłodzko County, Lower Silesian Voivodeship, Poland