Everything that exists has magical properties. Salt, whether it be sea salt, table salt, kosher salt, or whatever salts you can find is commonly used because it easily transfers energy to and from it. Any properties it contains natural can be found by meditating with it and focusing your thoughts and feelings on it. This is the basic way to build your magick abilities with anything you wish to do.
Why would you want to take energy from salt? I don't comprehend what it is you are attempting to achieve. Salt is best used for containing your energy during a spell. Receiving it and holding it while you build it up, and then easily releasing it at a single point to create a stronger vibration, making your spell/ritual more likely to succeed. You can receive energy from anything, but that is typically not required and when it is, the energy source you would pull from should be something more yielding than salt. Salt is more like a battery for most practices.
Sea salt is a very important item when it comes to cleansing and consecrating an object. It's properties are:cleansing crystals, purification, grounding, protection magick and ritual. It is used on the altar to represent the Earth. It is used with water for asperging, sea spells, consecration and casting circles and lastly it is used with garlic and rosemary to banish evil. (Source:http://www.themagickalcat.com/Articles.asp?ID=242)
Table salt comes from the earth as well, so it too contains magickal properties. You can always use sea salt and table salt in different ways to coordinate with what you are trying to do.
It's one of those great witch things that is inexpensive, you can find anywhere, and yes, soaks up negative energies. I have a big bowl of it to neutralize energies on crystals, amulets, just about anything.
In my experience, combining natural materials together means things do not fight other things. Like colors clashing.
Blessed Be.
Sea salt has the same properties that regular salt does, however it has a deeper connection to water in addition to earth. For those with water-earth vibrations/connections, they will feel more at home with sea salt than with regular table salt. Himalayan pink salt will also make those who are water-earth types feel more at home, especially if they are old souls.
Saying that, most salts are impure, and regardless of their status as salts and thereby as symbols and objects of purification, they are imperfect. Sea salts often contain some of the more "fishy" sort of flavors, especially those taken directly from the sea as opposed to those that were first sent through an extensive purification process. In the works to purify the salts in order to be used for human consumption, the "fishy" flavors will not be removed from the sea water, and will remain in the salt when the water is dehydrated.
Himalayan pink salt is slightly more pure, as it is truthfully salt that was created through a fossilization process, however it also comes from a sea (albeit an ancient one), and will still contain impurities of the sea. It may even be considered by some to be less pure, as no purification process is undertaken by humans, but rather it is a natural purification process which occurs.
Out of all the salts I know, kosher salt is perhaps the most pure. However I think any salt is the perfect salt for one to use if that is what is readily at hand.
