Nūhou - No ke aha i ikaika ai a paʻa ai ka pōhaku granite?

No ke aha he ikaika a he paʻa ka pōhaku granite?
GraniteʻO ia kekahi o nā pōhaku ikaika loa i loko o ka pōhaku. ʻAʻole wale ia he paʻakikī, akā ʻaʻole maʻalahi hoʻi e hoʻoheheʻe ʻia e ka wai. ʻAʻole ia e maʻalahi i ka ʻino ʻia e ka waikawa a me ka alkali. Hiki iā ia ke kū i mua o 2000 kg o ke kaomi no kēlā me kēia kenimika kuea. ʻAʻohe hopena maopopo o ka wā ma luna ona no nā makahiki he ʻumi.

He nani nō ke ʻano o ka granite, ʻike pinepine ʻiaʻeleʻele, keʻokeʻo, hinahina, melemele, kala pua, rose a pēlā aku ke kala pāpaʻu, e hoʻopili ana i ka wahi ʻeleʻele, nani a lokomaikaʻi. ʻO nā pono i luna, lilo ia i koho kiʻekiʻe loa i ka pōhaku kūkulu. ʻO ka pōhaku puʻuwai o ka hale hoʻomanaʻo i nā koa o ka poʻe ma ke kahua ʻo Tiananmen o Beijing ua hana ʻia mai kahi ʻāpana granite i hoʻouna ʻia mai Laoshan, ka moku ʻo Shandong.

No ke aha i loaʻa ai kēia mau ʻano i ka granite?
E nānā mua kākou i kāna mau mea hoʻohui. ʻO nā ʻāpana mineral e hana ana i ka granite, ʻoi aku ma mua o 90% nā mineral ʻelua, ʻo feldspar a me quartz, ʻo ia hoʻi nā feldspar nui loa. He keʻokeʻo pinepine ka Feldspar, hina, ʻulaʻula, a he hina ʻole a hina paha ka quartz, ka mea e hana ai i nā waihoʻoluʻu kumu o ka granite. He mau mineral paʻakikī ka Feldspar a me ka quartz a paʻakikī ke neʻe me nā pahi kila. No nā wahi ʻeleʻele i loko o ka granite, ʻo ka mica ʻeleʻele nui a me nā mineral ʻē aʻe. ʻOiai he palupalu ka mica ʻeleʻele, ʻaʻole ia he nāwaliwali i ke kūʻē ʻana i ke kaomi, a he liʻiliʻi loa kona mau ʻāpana i loko o ka granite, pinepine ma lalo o 10%. ʻO kēia ke kūlana paʻa loa o ka granite.
ʻO kekahi kumu ikaika o ka granite, ʻo ia ka pili pono ʻana o kona mau ʻāpana mineral kekahi i kekahi, a ʻo ka nui o nā pores he emi ma mua o 1% o ka nui o ka pōhaku. Hāʻawi kēia i ka granite i ka hiki ke kū i ke kaomi ikaika a ʻaʻole hiki ke komo maʻalahi ʻia e ka wai.

ʻOiai he ikaika loa ka Granite, akā i ka wā lōʻihi o ka lā, ka ea, ka wai a me ke olaola, e loaʻa ana kahi lā o ka "pala", hiki iā ʻoe ke manaʻoʻiʻo? ʻO ka hapa nui o ke one i loko o ka muliwai he mau hua quartz i waiho ʻia ma hope o ka luku ʻia ʻana, a ʻo ka lepo i hoʻolaha nui ʻia he huahana nō hoʻi ia o ka palaho ʻana o ka granite. Akā, he manawa lōʻihi loa ia, no laila, ma ke ʻano o ka manawa kanaka, he paʻa loa ka granite.