Calcium, phosphorus, iron, potassium, selenium, magnesium and zinc are all essential for human nutrition.  However, many more minerals are needed to maintain optimal health.  Chromium, cobalt, copper, manganese and potassium are also important, even though they are only needed in small amounts. Besides these  minerals, the body needs many trace minerals.  The most bioavailable trace minerals are liquid plant derived minerals from a mine in Utah.  One affordable source is Buried Treasure Pure Colloidal Minerals Liquid -- 33.5 fl. oz.

Calcium is one of the most important major minerals.  A chelated form of calcium is the most absorbable, calcium citrate is 40% absorbable with calcium carbonate only 10% absorbable.  Calcium carbonate is usually the least expensive but with its absorbability its value is questionable.  When taking a calcium supplement, only take 500 mg at a time.  That is the most the body can absorb at once.  Liquid calcium with magnesium and vitamin D is the easiest form of calcium to take.  The product I use is:

BlueBonnet's Liquid Calcium Magnesium Citrate Orange Flavor 16oz LIQUID CALCIUM MAGNESIUM CITRATE PLUS VITAMIN D 16 FL. OZ. Available in natural blueberry, lemon and orange flavors. Available in easy-to-swallow liquid form for maximum assimilation and absorption. Product No. 686 - 16 oz. Bottles (Blueberry) Product No. 688 - 16 oz. Bottles (Lemon) Product No. 690 - 16 oz. Bottles (Orange) Other ingredients purified water, cyllulose, ascorbic acid, citric acid, natural flavors.

 

 

• Calcium - used by teeth, bones - needed for heart health
• Chlorine
• Chromium -This mineral assists the hormone insulin and helps it to operate more efficiently. When the insulin is functioning at the appropriate level, your blood sugar levels are lower, which is helpful to individuals with type 2 diabetes. This mineral has also been proven to help with weight loss.
• Copper
• Iodine - combines with tryosine to create the hormone thyroxine
• Iron - transports oxygen in red blood cells - Lack of iron can cause fatigue and low energy levels. Iron deficiency is usually found in pre-menopausal women, athletes and vegetarians. Although iron helps boost your energy levels, too much of this mineral may cause heart disease and can place you at higher risks for cancer. Therefore, men and women after menopause, do not require this as a supplement. 
• Magnesium
• Manganese
• Molybdenum
• Phosphorus
• Potassium - important ion in nerve cells
• Selenium
• Sodium
• Zinc

Food provides these minerals. If they are lacking in the diet, then various problems and diseases arise.  

A good source for minerals can be found at:  Two excellent sources are DoctorsTrust.com and Vitacost.com .  I'll try and alert you as to which source currently has the best sales.