- What stone is harder than diamond?
- What type of weathering is acid rain?
- What type of rock is most resistant to weathering?
- Which rock type is most easily weathered and why?
- What rocks are easily weathered?
- Which is the strongest rock?
- What is the most durable rock?
- Which is the softest rock on Earth?
- What gives quartz many beautiful colors?
- What is the weakest rock?
- What can dissolve rock?
What stone is harder than diamond?
wurtzite boron nitride(PhysOrg.com) — Currently, diamond is regarded to be the hardest known material in the world.
But by considering large compressive pressures under indenters, scientists have calculated that a material called wurtzite boron nitride (w-BN) has a greater indentation strength than diamond..
What type of weathering is acid rain?
Figure 1: chemical weathering caused by rain water. Rain has a major impact on karst scenery through chemical weathering. ‘Ordinary’ rain is naturally acidic because it contains dissolved carbon dioxide that forms weak carbonic acid. When this weak acid comes into contact with calcite, the limestone begins to dissolve.
What type of rock is most resistant to weathering?
Sandstone is a sedimentary rock that is highly resistant to weathering. Other sedimentary rocks you will encounter are mudstone and siltstone.
Which rock type is most easily weathered and why?
Sedimentary rocksWhat rock type is most easily weathered? Why? Sedimentary rocks because they contain calcite and are harder.
What rocks are easily weathered?
Igneous rocks, especially intrusive igneous rocks such as granite, weather slowly because it is hard for water to penetrate them. Other types of rock, such as limestone, are easily weathered because they dissolve in weak acids. Rocks that resist weathering remain at the surface and form ridges or hills.
Which is the strongest rock?
Diamond is the hardest known mineral, Mohs’ 10.
What is the most durable rock?
QuartziteQuartzite is one of the most physically durable and chemically resistant rocks found at Earth’s surface. When the mountain ranges are worn down by weathering and erosion, less-resistant and less-durable rocks are destroyed, but the quartzite remains.
Which is the softest rock on Earth?
talcThe name for talc, a sheer white mineral, is derived from the Greek word talq, which means “pure.” It is the softest rock on earth.
What gives quartz many beautiful colors?
Quartz becomes colored with the presence of other minerals or growth imperfections. Quartz variation Amethyst has iron impurities, quartz variation citrine gets it yellow color from aluminum or irradiation.
What is the weakest rock?
Sedimentary rocksSedimentary rocks tend to be the ‘weakest’ of the three, as Igneous and Metamorphic rocks both undergo extreme pressures to form.
What can dissolve rock?
When water (e.g. rainwater) mixes with carbon dioxide gas in the air or in air pockets in soil, a weak acid solution, called carbonic acid, is produced. When carbonic acid flows through the cracks of some rocks, it chemically reacts with the rock causing some of it to dissolve.