1 Definition
1.2 Definition
Novaculite is a dense, hard, fine-grained, siliceous metamorpic rock which is a type of chert that breaks with conchoidal fracture
Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt
1.5 History
1.5.1 Origin
1.6.2 Discoverer
1.8 Etymology
From Latin word novacula, for razor stone
From English word silt and stone and from Proto-Indo-European root sal and stainaz
2.2 Class
Sedimentary Rocks
Sedimentary Rocks
3.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
3.6 Family
3.7.1 Group
Not Applicable
Not Applicable
3.8 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
4 Texture
4.1 Texture
Banded, Glassy, Rough, Vitreous
Clastic
4.2 Color
Black, Brown, Green, Grey, Red, White
Brown, Red, Reddish Brown
4.3 Maintenance
4.4 Durability
5.1.2 Water Resistant
5.1.5 Scratch Resistant
5.3.2 Stain Resistant
6.1.2 Wind Resistant
6.2.1 Acid Resistant
7.2 Appearance
8 Uses
8.1 Architecture
8.2.2 Interior Uses
Countertops, Decorative Aggregates, Flooring, Interior Decoration
Decorative Aggregates, Interior Decoration
8.3.2 Exterior Uses
As Building Stone, Garden Decoration
As Building Stone, As Facing Stone, Garden Decoration
8.3.6 Other Architectural Uses
8.4 Industry
8.4.2 Construction Industry
Arrowheads, Building houses or walls, Cement Manufacture, Construction Aggregate, Cutting Tool, for Road Aggregate, Knives, Landscaping, Making natural cement, Production of Glass and Ceramics, Rail Track Ballast, Roadstone, Spear Points, Used to sharpen metal tools and weapons
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
8.4.4 Medical Industry
Not Yet Used
Not Yet Used
8.5 Antiquity Uses
Artifacts, Monuments
Artifacts, Sculpture, Small Figurines
8.6 Other Uses
8.6.1 Commercial Uses
Cemetery Markers, Gemstone, In aquifers, In fire-starting tools, Jewelry, Manufacture of tools, Pebbles are used in ball mills to grind in ceramics industry, To determine the gold content of jewelry
Raw material for the manufacture of mortar, Soil Conditioner
10 Types
10.2 Types
Not Available
Not Available
11.3 Features
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
Available in Lots of Colors and Patterns, Easily splits into thin plates, Generally rough to touch, High silica content, Very fine grained rock
11.4 Archaeological Significance
11.4.1 Monuments
11.5.3 Famous Monuments
Data Not Available
Not Applicable
11.5.6 Sculpture
11.5.9 Famous Sculptures
Not Applicable
Data Not Available
11.5.11 Pictographs
11.5.13 Petroglyphs
12.1.2 Figurines
12.2 Fossils
13 Formation
13.1 Formation
Novaculite forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The formation of Novaculite can be either of chemical or biological origin.
Siltstone is a type of sedimentary rock which is formed from fine rock particles. As the particles of eroded rock travel along with water, the edges of the rock are worn-out by water into a rounded shape.
13.2 Composition
13.2.1 Mineral Content
Quartz, Silicon
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt
13.2.2 Compound Content
Ca, Silicon Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide
13.3 Transformation
13.3.1 Metamorphism
13.3.2 Types of Metamorphism
Not Applicable
Not Applicable
13.3.3 Weathering
13.3.4 Types of Weathering
Not Applicable
Biological Weathering, Chemical Weathering, Mechanical Weathering
13.3.5 Erosion
13.3.6 Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
14 Properties
14.1 Physical Properties
14.1.1 Hardness
14.2.8 Grain Size
Fine Grained
Fine Grained
14.2.9 Fracture
14.2.10 Streak
14.2.11 Porosity
Less Porous
Highly Porous
14.2.12 Luster
14.2.13 Compressive Strength
15.4.2 Cleavage
Non-Existent
Not Available
15.4.3 Toughness
15.4.4 Specific Gravity
15.4.8 Transparency
Translucent to Opaque
Opaque
15.4.9 Density
2.7 g/cm32.6-2.7 g/cm3
0
1400
16.4 Thermal Properties
16.4.1 Specific Heat Capacity
16.5.2 Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Water Resistant
17 Reserves
17.1 Deposits in Eastern Continents
17.1.1 Asia
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
17.1.2 Africa
Kenya, Morocco, South Africa, Tanzania
Namibia, Nigeria, South Africa
17.1.3 Europe
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
17.1.4 Others
Greenland, Mid-Atlantic Ridge
Greenland
17.2 Deposits in Western Continents
17.2.1 North America
Canada, Mexico, USA
Canada, USA
17.2.2 South America
17.3 Deposits in Oceania Continent
17.3.1 Australia
New South Wales, Queensland, South Australia, Western Australia
New South Wales, New Zealand