Some other things perhaps we need to speculate on:
a) are the spherules all in areas where there is sandstone-like or porous rock?
b) maybe there should be pockets of spherules not yet spread out across the landscape - such as pockets of spherules formed together in a patch inside the rock perhaps. In that case we might see an area which has some coming out of the rock where they formed, before they are spread out by whatever process spreads them out.
c) Why are they spread out across the areas we see them? What has spread them out?
d) why are the ones on Mars all small? There are some which are very large on Earth.
The concretion theory just makes so much sense and explain many of the shapes and protrusions and clustering we have seen. I copied this from wiki as it was so interesting.
Moqui Marbles
Moqui Marbles, hematite concretions, from the Navajo Sandstone of southeast Utah. Cube is one centimeter square.
Moqui Marbles, also called Moqui balls, and "Moki marbles", are iron oxide concretions which can be found eroding in great abundance out of outcrops of the Navajo Sandstone within south-central and southeastern Utah. These concretions range in shape from spheres to discs, buttons, spiked balls, cylindrical forms, and other odd shapes. They range from pea-size to baseball-size. They were created by the precipitation of iron, which was dissolved in groundwater. These concretions are argued to be a terrestrial analogue of the Martian hematite spherules, called "blueberries" (Chan and Parry 2002, Chan et al. 2005).
What these things are exactly may be difficult to prove.
If this is such thing as hail it would be on the list of undesirable informations and therefore colored in unrealistic colors.
The hole in the ground, however, could have formed when water freezes in a limited space, and then evaporates due to the freeze-drying.
Note the rocks around the hole. they have rolled into the basin, forming a circular form around the hole, this suggests that the soil has arisen due to frost expansion
I would agree with you...but the ones on Mars appear to have furry bits on their edges which suggests to me that they may come from a fungus or mushroom kind of plant rather than being of rock origin. Of course they could be droppings which are being biodegraded by fungus too. There are definitely ones which look 'new' and ones which look 'old' as well.
Having said that, there are microscopic imager photos where the RAT has ground into a rock and found spherules because there are disk-shapes which suggest that it has ground away half a spherule. So they must also exists like your images too.
I am curious about the common dents which appear on many of them. These appear to be as if they broke off something which would suggest that they grew...
1. If These so-called blue blackberries are nature liver one should find examples of Infected individuals. 2. if this is inorganic Phenomena, we strongly expect clef copies and even discoloration. In both cases. One should not expect to see this case sit on the surface as if they had been placed there by computer technology some of them should be half-buried in the environment and in no case hangs in the unreasonable position.
This is just a simple example of how the challenges are approximate prior knowledge base.
So, maybe we can have some wild speculative guesses as to what these spherules are? We might actually come up with some interesting ideas and one or two may hit the nail on the head and be really what they are. Unless NASA have inside knowledge, I dont think they know what they are either, but they must have analysed some for composition and content but have we seen the results ? If so, please point me to a link.
What do we know about the spherules then?
They are mostly roundish, but there are also a lot which are irregular shaped. They have some 'fur' on the outside and many of them have these indentations with a 'bobble' in the middle of it - kind-of like a doughnut(donut) shape that we see elsewhere but perhaps different. Are they really blue to our eyes or is this just a fake colour created by the artisticly-minded. Do we think these spherules are sticky? Is this what the 'fur' is - like the hooks on velcro.
They appear all over some locations but locally in those locations are not in some areas (maybe tracks or paths at the base of rocks or between rocks) Where there are areas of many spherules what does this say about the area? Is it a martian-populated area, Is it a good spherule-growing area? Why are the spherules in some areas and not others? How did they get there? How does this fit in with the accepted idea of spherules - that they are pieces of rock.
I feel that they would all be round if they were pieces off a plant or fungus. Mushrooms are generally mushroom-shaped, seeds are generally seed-shaped and seeds or mushrroms off the same plant are the same shape. This is why I do not think they are of plant kingdom origin.
To me they look like they are made by some being because of the different shapes mixed in with each other. Maybe most beings make theirs round, but some arty type beings like to make odd-shaped ones (or are inexperienced at making round ones). Possibly this is what these Martians do?Possibly they are food storage or waste packets? As I have said before, there are crabs which make these kind of balls and dung beetles also lay their eggs inside balls of elephant dung. Maybe they are eggs and the indentations are a way out for the pupae. Stick-insect eggs have a 'cap' at one end which gets 'popped' to let the tint stick-insect out of its egg. There are many insects which use other (sometimes live) hosts as 'food' for their eggs/pupae. Wasps, spiders, etc.
Possibly they are made by larger organisms as waste and smaller organisms make use of them as food? That happens a lot in nature and is an efficient way to get rid of waste.
Aged spherules - Do we have examples of new and old ones? How do we know (or think) the old ones are old? What do old/new ones look like? What makes them old? Wind, water, being half eaten, disintergration over time by the atmosphere? Are there areas of new spherules? Like there has been an event there which has produced these new ones? If so what event was it and does it lead us to what produced them?