Definition
Diamictite is a sedimentary rock that consists of non-sorted to poorly sorted terrigenous sediment containing particles that range in size from clay to boulders, suspended in a matrix of mudstone or sandstone
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers
Origin
Southern Mongolia
-
Discoverer
Unknown
Unknown
Etymology
From Greek dia through and meiktós or mixed
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Clastic
Clastic or Non-Clastic
Color
Brown, Buff
Grey, White, Yellow
Durability
Durable
Durable
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, Paving Stone
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
Curbing
Powder
Construction Industry
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping, Roadstone
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, raw material for manufacture of quicklime and slaked lime, Source of calcium
Antiquity Uses
Artifacts
Artifacts, Monuments, Sculpture, Small Figurines
Commercial Uses
Commemorative Tablets, Creating Artwork, Production of Lime
Alumina Refineries, Creating Artwork, Drawing on blackboards, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Paper Industry, Production of Lime, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Whiting, Whiting material in toothpaste, paint and paper
Types
Bedded Diamictite and Laminated Diamictite
Chalk Marl and Marl
Features
Host Rock for Lead, Is one of the oldest rock
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock
Archaeological Significance
Formation
Diamictite is unevenly sorted terrigenous, non-calcareous sedimentary rock which forms due to weathering of mudstone and sandstone.
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.
Mineral Content
Calcite, Clay, Feldspar, Micas, Quartz
Calcite, Clay, Clay Minerals, Quartz, Sand
Compound Content
-
Ca, NaCl, CaO
Types of Metamorphism
-
-
Types of Weathering
Biological Weathering, Chemical Weathering
Biological Weathering, Chemical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Water Erosion
Grain Size
Coarse Grained
Very fine-grained
Fracture
Conchoidal to Uneven
-
Streak
Light to dark brown
White
Porosity
Highly Porous
Highly Porous
Luster
Grainy, Pearly and Vitreous
Dull
Specific Gravity
4.3-5.0
2.3-2.4
Transparency
Opaque
Opaque
Density
2.2-2.35 g/cm3
2.49-2.50 g/cm3
Resistance
Heat Resistant, Impact Resistant
Heat Resistant
Deposits in Eastern Continents
Asia
China, India, Kazakhstan, Mongolia, Russia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Africa
Namibia, Nigeria, South Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
England, France, Germany, Spain, United Kingdom
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Brazil, Venezuela
Colombia
Deposits in Oceania Continent
Australia
New South Wales, New Zealand
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula
All about Diamictite and Chalk Properties
Know all about Diamictite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Diamictite and Chalk belong to Sedimentary Rocks.Texture of Diamictite is Clastic whereas that of Chalk is Clastic or Non-Clastic. Diamictite appears Banded and Chalk appears Soft. The luster of Diamictite is grainy, pearly and vitreous while that of Chalk is dull. Diamictite is available in brown, buff colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Diamictite are commemorative tablets, creating artwork, production of lime and that of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.