There is no definite answer to your question. Every reservoir has its "Crude type" that is unique in composition. And that is the answer for "crude oils". Crude types has different viscosity - some flow easy, other can be used as roof covering once cooled down after it surface. The next is the sulfur content, and alphaltines. Crude oil is recovered with water and sand that is removed.
no other oils can be mixed
There are 2 kinds of oils that needed by our body : Fatty acid oils, which you can get from butter and meat Non fatty acid oils, which you can get from oils.
fats and oils are unhealth food in many differant ways
Minerals have many uses in different industries. Mineral oils are used in the mechanical industry as a lubricant. Minerals oils are used in the cosmetics industry as an ingredient in such things as baby oils and lotions.
Oils and waxes are emollients for skin; also many cosmetic ingredients are easily soluble in fats or oils.
500 oils
Scientific research has isolated hundreds of chemicals in essential oils, and has shown many essential oils to have anti-bacterial, anti-fungal, and antiparasitic properties.
That is about 4 tbsp.
There are many places where one could purchase pure essential oils. One could purchase pure essential oils from online shopping sites such as Amazon or eBay.
One can purchase these aromatic oils at such stores as Pier One Imports. Also, many on line retailers stock these oils. The oils typically cost anywhere from $20.00 to $25.00.
Scent free oils can be purchased at many retailers. Amazon and Scent Free Girl each have a wide selection of scent free oils which one may find suitable.
Now Essential oils are used for aromatherapy and many are made from 100% natural sources. You can mix oils in potpourri or just dab onto a sachet or your wrists depending on the type and desired effect.