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Pitchstone has a hardness of 5.5-6 on the Mohs scale, making it a relatively soft rock compared to other common minerals.

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2y ago

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Which legendary stone is said to be of impenetrable hardness?

The legendary stone that is said to be of impenetrable hardness is the Philosopher's Stone. It is believed to have the power to transmute base metals into gold and grant eternal life.


How hard is Vancouver Island Flowerstone on the Mohs Scale of hardness?

Flowerstone, also know as Chrysanthemum Stone, is a relatively soft stone. Graded on the Mohs scale of hardness it is a 3 or 4.


Which crusher should be used for which rock?

Different crushers are selected mainly according to rock hardness and final product particle size. Jaw crusher (primary crushing): Suitable for various medium-hard and hard rocks or ores, such as granite, basalt and river pebbles. Cone crusher (secondary / tertiary crushing): Suitable for medium-hard to hard, highly abrasive ores like quartz and granite. Not for sticky, clay-rich ores. Impact crusher (secondary / tertiary crushing): Suitable for medium-low hardness brittle materials, such as limonite, limestone and dolomite. Hammer crusher: For soft, low-abrasion ores such as gypsum and soft manganese ore. VSI crusher: Fine crushing and shaping to produce fine aggregates. Suitable for medium-hard to extra-hard brittle rocks, such as river pebbles, granite and basalt. Mobile crusher: Integrated crushing and screening unit, easy to relocate. Ideal for frequently moved job sites, applicable to medium-hard and hard ores such as iron ore, granite and construction waste.


Why the stone is hard?

Stones are hard because of their molecular structure, which consists of tightly packed mineral crystals. These crystals create a strong and rigid framework, giving the stone its hardness. Additionally, the composition of minerals within the stone can vary, influencing its level of hardness.


How can I determine the type of stone I have?

To determine the type of stone you have, you can start by examining its physical characteristics such as color, texture, and hardness. You can also conduct a simple scratch test using a common household item like a steel nail to check the stone's hardness. Additionally, consulting a geologist or a professional stone expert can help you identify the specific type of stone you have.


How can a transparent stone be identified?

A transparent stone can be made of any material. If you suspect that it is a diamond, the field test for diamond is extreme hardness.


What stone or rock is almost as strong as diamond?

This should give you a better understanding of mineral hardness: http://www.answers.com/topic/mohs-scale-of-mineral-hardness


What is the forth hardest gem?

Emerald is the forth hardest stone. It has hardness of 7.5 to 8


What do you use to cut stone?

Depends on the hardness of the rock. Under Mohl scale I would suggest Diamond is use to cut many hard objects because of its hardness


What is the hardness of emeralds?

The hardness of an emerald is 7.5-8. The hardest stone is a diamond which has a hardness of 10.


How do you identify a raw diamond?

In the field, you can identify a raw stone because of its clarity and its extreme hardness.


What is marbles hardness?

Marble has a hardness of around 3-4 on the Mohs scale, which measures the hardness of minerals. This means that marble is a relatively soft stone compared to others.