What Is Mohs Hardness Scale? - Ask.com, Mohs Hardness Scale is a way of measuring the Hardness of particular minerals by their ability to scratch a ... which being talc is the softest, to ... the Rock Cycle

Mohs Scale of Mineral Hardness - AFMS Home Page, Mohs Scale of Mineral Hardness. ... Hardness: Mineral: Associations and Uses: 1: Talc: Talcum powder. 2: Gypsum: Plaster of paris.

What rock is the strongest?What is the mohs hardness scale ..., Talc is the softess rock, therefore diamond can stcratch Talc so diamond is stronger ... Mohs Hardness Scale determines mineral Hardness, not rock Hardness.

Mohs Hardness Scale - Rockroost, Hardness: Mineral: Associations and Uses: 1: Talc (Softest) Talcum powder. (can be scratched by a fingernail.) 2: Gypsum: Plaster of paris.

Talc - ThinkQuest, If you shine a light on talc, it will ... Hardness: 1: It is very soft. You can scratch into it with a fingernail. Specific gravity: 2.7 – 2.8: talc ...

Mohs Hardness Scale of Minerals - About.com Geology, The 10-mineral Mohs scale of relative hardness is based on what scratches ... Talc; Gypsum; Calcite; Fluorite; Apatite; ... color, and rock type to zero in on an ...

Mohs Scale of Hardness w/ Diamond Rock Mineral, Quantity: 1 - Scale of Hardness Rock Set with Diamond This is the traditional Mohs ... talc is the softest so it is given number 1.

LESSON 4 - Teachers Network, ... HOW CAN WE TELL THE HARDNESS OF ROCKS? AIMS: ... (talc and feldspar) ... crayons, 5 ROCK samples, fingernail. Procedure: 1. Label each ROCK 1, 2, 3, 4, 5.

hardness of siltstone on mohs scale - Crusher South Africa, Rock Hardness Reference ... Hardness: Mineral: Description: 1: Talc: Fingernail scratches it easily. 2: Gypsum: Fingernail scratches it. 3: Calcite: ...

Mohs scale | Define Mohs scale at Dictionary.com, ... a scale of hardness used in mineralogy. ... in increasing hardness, are: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5 ... Rock cycle. Minerals. Nearby Words ...

Mohs Scale of Hardness - Squidoo, -A rock or mineral can scratch another of the same hardness. For example, a talc can scratch a talc as a diamond can scratch another diamond.

How to Test Specific Hardness | eHow, Hardness measures the ability of a mineral to resist abrasion. ... talc, and ten being the ... How to Test the Hardness of a Rock.

Mohs Hardness Scale - Kean University, Mohs Hardness Scale ... "Hardness" means the effort necessary to produce a scratch on the surface of the rock or ... , the mineral talc is the softest while diamond ...

Hardness: Mineral Properties - The Mineral and Gemstone Kingdom, Information on the mineral property Hardness . ... What is a Rock & What is a Mineral; Mineral Properties; ... since Talc is the softest known mineral and Diamond the ...

Mineral Hardness Testing from Rockman - Rocks and minerals, How to conduct a hardness test on an unknown rock or mineral using Mohs Scale of hardness. ... Talc (H=1) 2. Gypsum (H=2) 3. ... "Tools" for Testing hardness.

Mineral Hardness - Mineralogy Database, The degree of hardness is determined by observing The comparative ease or difficulty which which one mineral is ... Talc: 1.5: Between Talc and Gypsum: 2: Gypsum: 2.5 ...

talc (mineral) -- Encyclopedia Britannica, ... on the Mohs scale of hardness). ... talc, common silicate mineral ... Its soapy or greasy feel accounts for the name soapstone given to compact aggregates of talc ...

Mohs Hardness Scale - Answers.com, Talc (softest) 2. Gypsum 3. Calcite 4. Fluorite 5 ... Chalk is actually a rock. The Mohs hardness scale is meant to measure a mineral's relative hardness in relation ...

how hard is the rock talc - WIM Crusher, One characteristic of a rock or mineral is its hardness. In 1822 ... Talc : Materials: a rock, a penny, a butter knife (not plastic), ... Talc. ... Talc rock Samples ...

Mohs scale | Define Mohs scale at Dictionary.com, ... a scale of hardness used in mineralogy. ... in increasing hardness, are: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5 ... Rock cycle. Minerals. Nearby Words ...