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If a mineral can be scratched by a fingernail but not by a pocket knife what does that tell us about the mineral?
Wiki User
∙ 14y ago
It would have a Mohs hardness somewhere between 2.5 and 5.5.
Wiki User
∙ 14y ago
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What is halite's hardness on mohs scale?
Halite, also known as rock salt, has a hardness of 2-2.5 on the Mohs scale. It is a relatively soft mineral that can be easily scratched with a fingernail or a pocket knife.
What mineral can be scratched with a knife blade or a window glass?
not diamond
How do you remove mighty putty?
Soften it will fingernail polish remover and scrape with a putty knife. It should come off relatively easy.
How many inches can a pocket knife be in size and be legal to carry in your possession in the stlIs there a law as to how many inches can a pocket knife be in order to carry in a pants pocket in CA?
(most likely 3 inches.) Actually, there's no limit. I happened to be researching this exact subject. Do a search on "California Law pocket knife" to find sites with detailed answers. Basically, as long as it's not a "switchblade" (includes butterfly knives), there's no limit on blade length for a folding knife under CA law. ALL folding knives are banned from schools up to high school, but okay on university and college campuses. Blades of 4" or more are banned from airports and government buildings. Most security don't know the shorter ones are okay, though, and won't let you take any kind of knife in with you. This is just the basic info, though, I encourage you to do more research for all the exceptions and limitations
What tool do you use to measure valve lash?
Feeler guage. Looks like a pocket knife and contains numerous small metal strips of varying thicknesses
What is halite's hardness on mohs scale?
Halite, also known as rock salt, has a hardness of 2-2.5 on the Mohs scale. It is a relatively soft mineral that can be easily scratched with a fingernail or a pocket knife.
What mineral has the same hardness as a fingernail?
GypsumHardnessMineralAssociations and Uses1Talc (Softest)Talcum powder. (can be scratched by a fingernail.)2GypsumPlaster of paris.Gypsum is formed when seawater evaporates from the Earth's surface. (May be scratched by a fingernail or by a copper coin.)3CalciteLimestone and most shells contain calcite.(Can be scratched by a steel pocket knife or sometimes a copper coin. Will scratch a fingernail, may scratch a copper coin.)4FluoriteFluorine in fluorite prevents tooth decay.(Can be scratched by a steel pocket knife. Will scratch a fingernail and a copper coin.)5ApatiteWhen you are hungry you have a big "appetite".(Can be scratched by a steel pocket knife. Will scratch a fingernail and a copper coin.)6OrthoclaseOrthoclase is a feldspar, and in German, "feld" means "field".(Will not scratch glass but will scratch steel blades, copper coins & fingernails.)7Quartz (Will scratch glass, steel blades, copper coins & fingernails.)8TopazThe November birthstone. Emerald and aquamarine are varieties of beryl with a hardness of 8. (Will scratch glass, steel blades, copper coins & fingernails.)9CorundumSapphire and ruby are varieties of corundum. Twice as hard as topaz.(Will scratch glass, steel blades, copper coins & fingernails.)10Diamond (hardest)Used in jewelry and cutting tools. Four times as hard as corundum.(Will scratch all of the above.)
What mineral can be scratched with a knife blade or a window glass?
not diamond
What mineral can be scratched with a steel knife or window glass?
apatite with a steel knife feldspar with window glass
What mineral can be scratched by a steel knife but not a copper penny?
You can scratch any mineral against a mineral with a higher place. Talc maybe?
What minerals can be scratched with a knife?
Apatite
Do you have to be 18 to buy a pocket knife?
Yes, you have to be 18 to buy a pocket knife
How much does a pocket knife cost?
A pocket knife can cost from $0.20-$1.000
Can you wear a pocket knife in Queensland?
There are no restrictions on wearing a pocket knife in Queensland.
What is the meaning of jackknife?
A large, strong clasp knife for the pocket; a pocket knife.
When was The Pocket-knife created?
The Pocket-knife was created on 1992-10-15.
What is the legal length of a pocket knife in Hawaii?
There is no length limit for a pocket knife in Hawaii.
