Asked By: John Peterson Date: created: Dec 17 2021

Who can identify my rock

Answered By: William Watson Date: created: Dec 20 2021

Can you identify my rock or mineral?Your state geological survey.A natural science museum.A college or university with a geology department.A rockshop.Members of a local Gem & Mineral club or Rockhunting club (many hobbyists are experts at identification)Vendors at a Gem & Mineral show..

Asked By: Hunter Bennett Date: created: Sep 10 2021

What is the hardest rock in the world

Answered By: Kyle Bailey Date: created: Sep 12 2021

Diamond is the hardest known mineral, Mohs’ 10.

Asked By: Jason James Date: created: Mar 31 2021

Is chalk a soft rock

Answered By: Samuel Hill Date: created: Mar 31 2021

Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of sub-microscopic plankton which had fallen to the sea floor.

Asked By: Ethan Bailey Date: created: Nov 23 2021

What is the toughest material on earth

Answered By: Connor Garcia Date: created: Nov 24 2021

DiamondDiamond is the hardest substance found on earth in so many natural forms, and it is an allotrope of carbon. The hardness of diamond is the highest level of Mohs hardness – grade 10. Its microhardness is 10000kg/mm2, which is 1,000 times higher than quartz and 150 times higher than corundum.

Asked By: Austin Howard Date: created: Sep 26 2021

What was the first rock on Earth

Answered By: Richard James Date: created: Sep 28 2021

In 1999, the oldest known rock on Earth was dated to 4.031 ±0.003 billion years, and is part of the Acasta Gneiss of the Slave craton in northwestern Canada.

Asked By: Gilbert Patterson Date: created: Jun 27 2022

What are the 10 types of rocks

Answered By: Jacob Collins Date: created: Jun 29 2022

Rocks: Igneous, Metamorphic and SedimentaryAndesite.Basalt.Dacite.Diabase.Diorite.Gabbro.Granite.Obsidian.More items…

Asked By: Brian Clark Date: created: Oct 10 2021

What is the most softest mineral

Answered By: Malcolm Miller Date: created: Oct 13 2021

TalcTalc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale.

Asked By: Donald Garcia Date: created: May 18 2021

What type of rock is Flint

Answered By: Jesus Jones Date: created: May 18 2021

Flint is a microcrystalline rock made of silica and is considered to have begun forming soon after the deposition of Chalk. The silica replaces the original Chalk carbonate grain by grain.

Asked By: Landon Turner Date: created: Nov 04 2021

What is the weakest mineral on Earth

Answered By: Joshua Wilson Date: created: Nov 06 2021

Talc is the softest mineral on Earth. The Mohs scale of hardness uses talc as its starting-point, with a value of 1. Talc is a silicate (like many of the Earth’s most common minerals), and in addition to silicon and oxygen, contains magnesium and water arranged into sheets in its crystal structure.

Asked By: Lewis Simmons Date: created: Jun 12 2022

Do rocks get soft

Answered By: Horace Turner Date: created: Jun 13 2022

Generally, the rocks are fairly soft and can break apart or crumble easily. Examples include limestone, flagstone or sandstone. Geologists need to realize that sedimentary rocks are forming around us all the time, and most rocks around us are sedimentary rocks.

Asked By: Nicholas Bennett Date: created: Jun 13 2022

What type of rock is white

Answered By: Devin Morgan Date: created: Jun 14 2022

QuartziteQuartzite. Environment: Quartzite forms at many temperatures and pressures. Distinguishing Characteristics: light grey or white, medium grained, very hard. Uses: Quartzite is the raw material for the glass and ceramics industries.

Asked By: Luke Kelly Date: created: Dec 11 2021

Is sedimentary the softest rock

Answered By: Miguel Coleman Date: created: Dec 13 2021

The sediments from which sedimentary rocks form vary in size, composition, and in the manner in which they were formed. As a group, sedimentary rocks are the softest and least brittle of the 3 major categories of rock. They are also the most widely distributed of the 3 categories of rock on the Earth’s surface.

Asked By: Lewis Anderson Date: created: Mar 06 2021

What type of rock breaks easily

Answered By: Matthew Walker Date: created: Mar 07 2021

sedimentary rockGenerally, sedimentary rock is fairly soft and may break apart or crumble easily. You can often see sand, pebbles, or stones in the rock, and it is usually the only type that contains fossils. Examples of this rock type include conglomerate and limestone.

Asked By: Jaden Bell Date: created: May 08 2021

What is stronger than a diamond

Answered By: Miles Rogers Date: created: May 11 2021

Scientists have calculated that wurtzite boron nitride and lonsdaleite (hexagonal diamond) both have greater indentation strengths than diamond. Source: English Wikipedia. (PhysOrg.com) — Currently, diamond is regarded to be the hardest known material in the world.

Asked By: Bruce Coleman Date: created: Jun 07 2022

What rock is black

Answered By: Hunter Young Date: created: Jun 09 2022

EnvironmentGrainColorRock Namecourseblack (dark) coloredGabbrofinelight colored (pastel)Rhyolitefinemedium coloredAndesitefineblack (dark) coloredBasalt5 more rows

Asked By: Simon Walker Date: created: Nov 26 2021

What can scratch a diamond

Answered By: Caleb Baker Date: created: Nov 29 2021

Diamonds happen to be the hardest known mineral or gem on the planet. Diamonds are ranked a 10 on the Mohs Scale of Hardness; all other minerals are ranked 9 or below. Anything with a hardness below that of a diamond cannot scratch a diamond. That means only a diamond can scratch a diamond.

Asked By: Jonathan Campbell Date: created: Mar 06 2021

What rock is the weakest

Answered By: Chase Brooks Date: created: Mar 06 2021

Sedimentary rocksSedimentary rocks tend to be the ‘weakest’ of the three, as Igneous and Metamorphic rocks both undergo extreme pressures to form.

Asked By: Gavin Perez Date: created: Oct 21 2021

Is lime the same as chalk

Answered By: Howard Bryant Date: created: Oct 24 2021

Lime is made from calcium carbonate. This can be found in a variety of forms for example chalk, limestone or sea shells. In the British Isles sources are almost invariably chalk or limestone. … At these temperatures the chalk breaks down by giving off carbon dioxide leaving calcium oxide which is known as quicklime.

Asked By: Lewis Torres Date: created: Jun 23 2022

Is Chalk man made or natural

Answered By: Alex Long Date: created: Jun 26 2022

Chalk, in both its natural and man-made form, is white in colour and is considered to be a fairly soft solid. Naturally, It comes from the ground where it is found as a porous (can hold water) sedimentary rock. It is a form of limestone and is composed of the mineral calcite.

Asked By: Albert Rodriguez Date: created: Apr 27 2022

What is the rarest gem on earth

Answered By: Thomas Allen Date: created: Apr 30 2022

MusgraviteMusgravite was discovered in 1967 and is arguably the rarest gemstone in the world. It was first discovered in Musgrave Ranges, Australia, and later found in Madagascar and Greenland. The first sizable gem-quality specimen was discovered in 1993.

Asked By: Zachary Alexander Date: created: Mar 04 2021

Is quartz harder than diamond

Answered By: Carlos Jones Date: created: Mar 06 2021

You may know that diamond, with a hardness of 10, is the hardest material in the gem world….The Mohs Scale of Hardness.10Diamond7Quartz [Example: It scratches window glass]6Feldspar [Example: A steel file will scratch it]5Apatite4Fluorite [Example: A knife will scratch it]5 more rows

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