Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
  
Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel
  
History
  
  
Origin
Romania and Moldova, Europe
  
Unknown
  
Discoverer
Unknown
  
Unknown
  
Etymology
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described
  
From Old English flint - a type of rock mainly known for high hardness and for giving off sparks when struck
  
Class
Igneous Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Soft Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Volcanic
  
Not Applicable
  
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Aphanitic to Porphyritic
  
Banded, Rough
  
Color
Bluish - Grey, Brown, Grey, Light to Dark Grey
  
Black, Brown, Green, Grey, Red, White
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
No
  
Yes
  
Scratch Resistant
No
  
Yes
  
Stain Resistant
No
  
Yes
  
Wind Resistant
No
  
Yes
  
Acid Resistant
No
  
No
  
Appearance
Vesicular
  
Glassy or Pearly
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
  
Decorative Aggregates, Homes, Interior Decoration
  
Exterior Uses
As Building Stone, Paving Stone, Garden Decoration
  
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping
  
Arrowheads, Cutting Tool, Spear Points
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts
  
Artifacts
  
Other Uses
  
  
Commercial Uses
Commemorative Tablets, Creating Artwork
  
Creating Artwork, Gemstone, In fire-starting tools, Manufacture of tools, Metallurgical Flux, Jewelry, To ignite fire, Used in flintlock firearms
  
Types
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite
  
Not Available
  
Features
Host Rock for Lead, Is one of the oldest rock
  
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Not Yet Used
  
Famous Monuments
Not Applicable
  
Not Applicable
  
Sculpture
Not Yet Used
  
Not Yet Used
  
Famous Sculptures
Not Applicable
  
Not Applicable
  
Pictographs
Used
  
Not Used
  
Petroglyphs
Used
  
Not Used
  
Figurines
Not Yet Used
  
Not Yet Used
  
Fossils
Absent
  
Present
  
Formation
Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. Further, the Oceanic crust is hydrothermally altered as quartz and sodium are added.
  
Flint is formed by the decomposition and compaction of various organisms such as sponges and diatoms under the water.
  
Composition
  
  
Mineral Content
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon
  
Silicon
  
Compound Content
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide
  
Silicon Dioxide
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism
  
Not Applicable
  
Weathering
Yes
  
No
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Not Applicable
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion
  
Chemical Erosion, Coastal Erosion, Water Erosion
  
Physical Properties
  
  
Hardness
2-2.25
  
7
  
Grain Size
Medium to Fine Coarse Grained
  
Very fine-grained
  
Fracture
Conchoidal
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Subvitreous to Dull
  
Vitreous
  
Compressive Strength
Not Available
  
450.00 N/mm
2
  
1
Cleavage
Perfect
  
Non-Existent
  
Toughness
Not Available
  
1.5
  
Specific Gravity
2.86-2.87
  
2.5-2.8
  
Transparency
Translucent
  
Translucent to Opaque
  
Density
2.77-2.771 g/cm3
  
2.7-2.71 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
0.74 kJ/Kg K
  
19
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
Not Yet Found
  
Azerbaijan, China, Russia
  
Africa
Not Yet Found
  
Not Yet Found
  
Europe
France, Greece, Romania, Scotland, Spain
  
Austria, Belgium, Cyprus, Denmark, France, Germany, Italy, Malta, Netherlands, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom
  
Others
Not Yet Found
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
USA
  
USA
  
South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
Bolivia
  
Deposits in Oceania Continent
  
  
Australia
New Zealand, South Australia, Western Australia
  
New Zealand, South Australia
  
Dacite vs Flint Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Dacite vs Flint characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dacite and Properties of Flint. Learn more about Dacite vs Flint in the next section. The interior uses of Dacite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Flint include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Dacite and Flint, they have various applications in construction industry. The uses of Dacite in construction industry include As dimension stone, Construction aggregate, For road aggregate, Landscaping and that of Flint include Arrowheads, Cutting tool, Spear points.
More about Dacite and Flint
Here you can know more about Dacite and Flint. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dacite and Flint consists of mineral content and compound content. The mineral content of Dacite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon and mineral content of Flint includes Silicon. You can also check out the list of all Igneous Rocks. When we have to compare Dacite vs Flint, the texture, color and appearance plays an important role in determining the type of rock. Dacite is available in bluish - grey, brown, grey, light to dark grey colors whereas, Flint is available in black, brown, green, grey, red, white colors. Appearance of Dacite is Vesicular and that of Flint is Glassy or Pearly. Properties of rock is another aspect for Dacite vs Flint. The hardness of Dacite is 2-2.25 and that of Flint is 7. The types of Dacite are Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite whereas types of Flint are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Dacite and Flint is white. The specific heat capacity of Dacite is 0.92 kJ/Kg K and that of Flint is 0.74 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Dacite is heat resistant, impact resistant, pressure resistant, wear resistant whereas Flint is heat resistant, impact resistant, pressure resistant, wear resistant.