Lava sand? I don't know. I've never used it in my area.
However, any sugar product like dry molasses powder, should be used mainly in a tea brew or in composting. Sugars are high carbohydrate foods, that drive microbes crazy, and build up their growth and activity.
If any sugars are used straight on the soil, too much of it can cause a temporary nitrogen deficiency to nearby plant roots in the soil. If sugars are dissolved in tea brews or in compost bins, the soil/composting microbes will have already digested the sugars into carbonic acid, ethanol, or acetic acid, which is fine for the soil, if used properly.
Too much sulfur can cause both an excessive acidic soil pH, plus harm many beneficial soil microbes, because sulfur is also a natural fungicide as well as essential micronutrient. Too much lime or calcium carbonate or wood ashes, will make your soil pH too high or alkaline.
The key with any fertilizer or soil amendment is balance, moderation, and wisdom.
The entire Kingdom of God can be totally explained as an Organic Garden (Mark 4:26)