1 Definition
2.1 Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Aplite is a fine-grained granite composed mainly of feldspar and quartz
2.3 History
2.4.1 Origin
Romania and Moldova, Europe
Iran
2.4.4 Discoverer
2.6 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 German Aplit, from Greek haploos simple + -ite
2.8 Class
Igneous Rocks
Igneous Rocks
2.8.2 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
2.10 Family
2.10.2 Group
2.11 Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
3 Texture
4.1 Texture
Aphanitic to Porphyritic
Granular, Graphic
4.4 Color
Bluish - Grey, Brown, Grey, Light to Dark Grey
Black, Grey, Orange, Pink, White
4.6 Maintenance
4.7 Durability
4.8.1 Water Resistant
4.8.4 Scratch Resistant
4.8.5 Stain Resistant
4.8.7 Wind Resistant
4.8.9 Acid Resistant
4.9 Appearance
Vesicular
Veined or Pebbled
5 Uses
6.1 Architecture
6.2.1 Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads
6.2.3 Exterior Uses
As Building Stone, Paving Stone, Garden Decoration
As Building Stone, As Facing Stone, Bridges, Paving Stone, Near Swimming Pools, Office Buildings, Resorts
6.2.5 Other Architectural Uses
6.3 Industry
6.4.1 Construction Industry
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping
As Dimension Stone
6.4.3 Medical Industry
Not Yet Used
Not Yet Used
6.5 Antiquity Uses
Artifacts
Artifacts, Monuments, Sculpture, Small Figurines
6.7 Other Uses
6.7.1 Commercial Uses
Commemorative Tablets, Creating Artwork
Curling, Gemstone, Laboratory bench tops, Small Sculptures, Tombstones
7 Types
7.1 Types
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite
Not Available
8.2 Features
Host Rock for Lead, Is one of the oldest rock
Available in lots of colors, Available in Lots of Colors and Patterns, Is one of the oldest rock
8.4 Archaeological Significance
8.4.1 Monuments
8.5.2 Famous Monuments
Not Applicable
Data Not Available
8.5.4 Sculpture
8.5.6 Famous Sculptures
Not Applicable
Data Not Available
8.5.8 Pictographs
8.5.10 Petroglyphs
8.5.12 Figurines
8.6 Fossils
9 Formation
9.1 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.
Aplites belong to intrusive igneous rocks which are mostly quart and alkali feldspar and are formed from residual eutectic granitic liquids and represent the final crystallization products of magma.
10.2 Composition
10.2.1 Mineral Content
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz
10.3.2 Compound Content
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
10.4 Transformation
10.4.1 Metamorphism
10.5.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism
10.5.3 Weathering
10.5.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Chemical Weathering, Mechanical Weathering
10.5.6 Erosion
10.5.8 Types of Erosion
Chemical Erosion
Chemical Erosion, Coastal Erosion, Wind Erosion
11 Properties
11.1 Physical Properties
11.1.1 Hardness
12.1.2 Grain Size
Medium to Fine Coarse Grained
Very fine-grained
12.1.4 Fracture
12.1.6 Streak
12.1.7 Porosity
12.1.9 Luster
Subvitreous to Dull
Dull to Pearly to Subvitreous
12.1.11 Compressive Strength
12.1.16 Cleavage
12.1.18 Toughness
Not Available
Not Available
12.1.19 Specific Gravity
12.1.22 Transparency
12.1.23 Density
2.77-2.771 g/cm32.6 g/cm3
0
1400
12.3 Thermal Properties
12.3.1 Specific Heat Capacity
0.92 kJ/Kg K0.79 kJ/Kg K
0.14
3.2
13.3.2 Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Wear Resistant
14 Reserves
14.1 Deposits in Eastern Continents
14.1.1 Asia
Not Yet Found
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
14.1.2 Africa
Not Yet Found
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
14.1.3 Europe
France, Greece, Romania, Scotland, Spain
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
14.1.4 Others
Not Yet Found
Not Yet Found
14.2 Deposits in Western Continents
14.2.1 North America
14.2.2 South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Not Yet Found
14.3 Deposits in Oceania Continent
14.3.1 Australia
New Zealand, South Australia, Western Australia
Not Yet Found