If you want to remove those metals, its fairly easy to edit them out of the raws, so don't force it on the rest of the community.
Force it? How could I possibly
force anything on the community? The only one who can come close is Toady, and as you pointed out those who disagree can easily fix it in their games.
I am expressing my opinion of something I think should be changed in vanilla DF, and putting up supporting evidence of why I think it should be so. Your objection and reasons why have also been noted, and then Toady will decide which he thinks is best.
For this reason, I will now cease to argue anything about 'game balance', 'rule of fun/cool', 'acceptable breaks from reality', 'if one thing unrealistic then nothing needs be realistic', or any such unresolvable topics. I shall henceforth only defend my argument that platinum as it is currently represented is unrealistic, and discuss alternative (and more realistic) ways it could be included.
I would also like to point out that the OP and many in this thread make severe assumptions about pre industrial technology and metalurgy.
Yes, I assume that they don't have access to large quantities of hydrochloric acid, among other advanced chemicals required to separate the platinum-group metals.
FerroPlatinum doesn't contain other Platinum group elements as impurities, it's all Iron and Platinum, likewise with the iron ores where the only impurity is platinum. I do not know why that is, maybe they don't work well with iron.
I've wanted to know for some time, why do we have seperate materials for what is supposed to be pure native metals anyways?
I sure hope you have a cite for that one, as I find it hard to believe.
For your second statement, I'm not quite sure what you're asking.
You're right it's not the ore deposit it's a sample, the ore deposit that came from is a mine in Russia, where they produce-- [In the central depression of the massif located alluvial placier, which is in operation since 1984 with PGE resources ~60 tons. Last time this placier producing ~5 tons of PGM per year.]http://www.mindat.org/loc-4435.html
Seeing as that mine produces
Platinum-Group metals I would assume that they are naturally alloyed together. Indeed, I suspect that the crystal in-question is not
pure platinum either, as the article didn't specify whilst other sources assert pure native platinum does not exist in nature.
Alright, here's a compromise solution I've got.
1. Platinum is renamed to "platina."
2. Platina is assumed to be pretty enough that dwarves will value it at current platinum's values, as well as its current uses.
3. Platina will be able to be alloyed with gold into white gold, or something else if a better name pops up.
4. Aluminum hasn't been discussed for a while, so except maybe for the occasional single-tile cluster of (unsmeltable) native aluminum, aluminum can be removed.
This makes concessions to both those who want realism and those who want platinum. Those in the first camp can reduce platina's material value and ability to be smelted, while those in the second can change platina's name. It seems likely to, if not be accepted by everyone, at least make everyone equally irritated. And what more can you ask for?
After much debate, I'm willing to concede on the price debate. I've come to realize that dwarven knowledge, while not enough to refine platina, would certainly be enough to identify it as a metal distinct from any others. At that point, the interplay of supply and demand could carry the price
anywhere, although I still think a silver-level (or a generous gold-level) price is a good compromise.
Platina itself, however, is far too brittle to be used on its own; you'd have better luck with pig iron. The platina-gold alloy, however, would be workable -perhaps even into weapons the way silver is.
As for aluminum: if it occurred at all in native from (larger than a few scattered flakes, that is) then it would be very easily smeltable and workable. But it doesn't. The only way it could be realistically included is as a value-2 (or value-3, if you insist) stone occurring with very low frequency in mudstone (maybe one or two related stones too) to represent a sample of stone with Al flakes in it.
EDIT:
OKAY, so the last five nina posts I haven't read yet. I'll get to them though, don't worry.