The theory that aluminum causes Alzheimer's has been debunked. Good thing, too, because aluminum is everywhere.

where was it debunked? is alumina zirconia everywhere?

Myth 4 in the attached link

Here is a link that might be useful: Alzheimers and aluminum

According to what I have on Granite Dust/Meal indicates that it has some Aluminum in it. There is also some evidence that the dust/meal, when inhaled, can cause lung cancer.
If your soil has adequate levels of organic matter there probably is no need for adding Granite Dust/Meal and if the soil does not have enough OM applying this material does no real good because there is nothing in the soil to convert the minerals in plant useable forms.

Kimmsr, you need to do some more studying. BEFORE you start posting things like this.

Everything I posted there, rhizo, is available to anyone that wishes to research that information and it is from good, reliable sources.

Minerals don't have to be digested by microorganisms in order to become readily available to plants. Yes, if you are providing those minerals only from an organic (meaning once living) source, but not if you are using dissolved minerals, mineral dust, mined mineral sources, etc.

Mikkle, plants take up different metals from the soil in varying degrees. That's why they are so useful in decontamination projects. What they do with those chemicals also varies, but often they are stored within the plant body.

I have NO idea if using this product would be a problem for plants or for people. I'd not use it until I found out for sure, though.

Clay is primarily made of hydrous Aluminum Silicates. If Aluminum were a heath problem for humans, we would all be in deep trouble.

i hear good things about the rock dust / idk about the aluminum / it is all around us we even drink out of it

If granite dust were of any concern there are huge areas of the New England states that would have become depopulated many years ago. Just because granite is the native rock a very high percentage of all rain fall takes the rock particles and dust downstream where ever water flows.

The only source of granite for me to add to my garden has turned out to be a very fine granular product used in chicken feed programs. I have added about eighty pounds per one thousand square feet of garden every three years turning to Jersey Green Sand and lime in rotation. I check my PH about every third year looking for a PH of 6.5 - 7.0.

Why granite in the first place? Simply because it introduces elements that have proven excellent for the New
England States. Their beautiful lush growth of all plants is proof in the pudding. Their granite is equal to our limestone though the two are quite different.

Additional mineral and trace minerals sources are Ironite and azromite. I am not at all concerned with any mini amount of lead ramped up to high levels of fear in California. Out there you are only permitted to exhale on the East side of the street. LOL

One eighty pound bag of chicken scratch product where I live is relatively inexpensive. It offers a different scratch element for all fowl including your song and game birds as well as quite safe and sane mineral additive to the soil.

You might wonder if those folks import limestone dust. Of course the do!

Granite grit (chicken grit) is one of the primary ingredients of all of my potting mixes! I've been using it for years. All used potting medium goes straight into the garden areas.

Thanks to all of you for your posts. I just want to make sure that everyone is aware that my post refers to the abrasive for carving the inscriptions out of granite stones the shop uses is (or has in it) alumina zirconia. Granite dust or a similar source of minerals is for most a necessary part of feeding the soil/plants.
mikkle

mikkle, I understand. If you find something out about the alumina zirconia, pass it along. I'm curious. Alumina is aluminum oxide.

One thing is certain: more and more aluminum (of any kind) is present in the modern human. I'm not sure that that would be a good thing!

I have used both granite dust and rock phosphate as an additive to my garden when I was in my 20s. I couldn't afford to buy loads of the bags all at once so I bought what I could and put it in the row as I planted near the plants. The life of the minerals so supplied is 3 to 5 years. Adding every year a little my garden plants became super hardy, disease and bug free nearly. Bugs with the gardens using chemical fertilizers. Production was great. Also I think it is rock phosphate that has copper in it. Our soil here is deficient in copper. A plant can't give you what it doesn't get from the soil. It didn't seem to harm us and we ate nearly exclusively from our garden.