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Questions tagged [rocks]

The tag has no usage guidance.

-3
votes
0answers
17 views

Rock Cleaning and Identifying [closed]

Looking for best practices in cleaning & identify rocks and minerals of all kinds found in the Great Lakes Region. I have agates, fossils, conglomerates and unknowns!
-1
votes
5answers
51 views

How can I clean stained garden rocks?

I have some white garden pebbles which are now yellow with trace of rust. I have tried to soak them in bleach diluted with water without success. Could I receive suggestions of an appropriate ...
-5
votes
1answer
692 views

What element is/used to be called Fb? [closed]

What element used to be called Fb? It was supposedly found in a meteorite in Antarctica and I can't find any references of it.
5
votes
2answers
13k views

What is chemical formula of Bauxite?

My book says Aluminium is extracted from its ore bauxite $\ce{Al2O3.nH2O}$ What does "n" stands for? Does it mean that there is no fixed amount of water in bauxite?
7
votes
1answer
139 views

If I were to create a fictional way to obtain elements from Granite, what would be a good approach?

Notes: This question is in regard to my Minecraft mod. To those who don't know, Minecraft is a first person survival game by Mojang, where the players' objective is to become self sufficient and ...
5
votes
2answers
794 views

Are there magnetic rocks, and not hematite?

I dug up some sand and small rocks in a stream bed near me and moved a powerful magnet through the wash picking up numerous small rocks and black sand. Now, the black sand is definitely small ...
7
votes
2answers
3k views

How to determine age of stones (and other inorganic matter)?

I'd like to ask how can one determine /with relative precision/ the age of stones and stone monuments, like statues, columns, stone walls or stone tablets? I know that one determines the age of ...
18
votes
2answers
6k views

Why is sand, sand; and why is glass, glass; While both mainly contain Silicon Dioxide?

I know that there is the famous process of heating material and converting them to glass; but what I don't know is, what is the chemical process of the creation of glass? Is it crystallization? How ...
2
votes
1answer
171 views

Binding forces in crystalline solids

I am referring to rocks in this instance. Individual crystals grow together in an igneous rock as it solidifies. I know that the $\ce{SiO4}$ tetrahedron is the basic building unit of silicate minerals,...
6
votes
1answer
31k views

Chemicals to clean natural stones

I picked up some stones from a hiking trip. What can I use to thoroughly clean the mud and other hard deposits on the surface of the stones? I have only washed them with plain water.
5
votes
1answer
5k views

How can I determine the chemical composition of local rocks and minerals?

Specifically I live in the U.S. so I'm asking about an ordinary rock that you might find in your backyard or near a playground. Humans have discovered gun powder, petroleum, silica, iron, and many ...
4
votes
2answers
322 views

What's the reddish powder that oozes out of a black rock?

As an artist, some of the work I do involves the use of seashells, sea rocks/stones, etc. I picked up a black rock from shore at one of the beaches here in Florida and it looked somewhat clumpy with ...