Reliquaries and alignments

[EvilMinion]

Would a "altar, shrine, or other permanent fixture dedicated to your deity" (such that it works with the Consecrate spell, for instance), have a detectable alignment?

If one were to create a reliquary weapon using the Reliquary Arms & Armor feat... would it have the alignment of the deity or the cleric of said deity who made the item? (ie: a LG cleric of a LN god)

If you have a LN cleric of LE evil god... who wanted to add the Holy weapon special ability to his reliquary weapon? Would it be a reliquary weapon anymore?

Are there any rules that might cover this, or it an 'up to the gm' sorta thing?

[Starglim]

As written detect evil, etc. only reveal an alignment for aligned magic items and then only at caster level 6 and above. I've always thought a holy/unholy symbol, altar, shrine or equivalent ritually dedicated object should have the alignment of its deity.

edit: Found the feat description. A LN cleric of a LE god cannot "add one casting of consecrate", as the spell has the [good] descriptor and his deity won't grant it to him. His god doesn't have holy symbols, so he can only create a reliquary weapon as an unholy symbol.

For the same reasons, he can't meet the prerequisites to craft a holy weapon. However, if he gets a cleric of a different god to help him (whose patron somehow agrees to it rather than making his friend an ex-cleric) I don't see a RAW reason that he can't have a holy weapon that is also an unholy symbol of his evil god and a dedicated fixture for a desecrate effect.