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Diatomitehe ʻano pōhaku siliceous, i hoʻopuehu nui ʻia ma Kina, ʻAmelika Hui Pū ʻIa, Denemaka, Palani, Romania a me nā ʻāina ʻē aʻe. He ʻano pōhaku biogenic siliceous accumulation, ka mea nui i haku ʻia me nā koena o nā diatoms kahiko. ʻO SiO2 ka nui o kāna mea hana kemika, hiki ke hōʻike ʻia e SiO2·nH2O, a ʻo ka hui mineral he opal a me nā ʻano like ʻole.

He 320 miliona mau tona o Kinalepo diatomaceousnā waihona a ʻoi aku ma mua o 2 biliona tons o nā mea i hoʻopaʻa ʻia, ka mea nui i ka East China a me Northeast Kina. Ma waena o lākou, ʻoi aku ka nui o ka laulā, a ʻoi aku ka nui o nā waihona ʻo Jilin (54.8%, ʻo ia ka mea i hoʻopaʻa ʻia ʻo Linjiang City, Jilin Province account no Asia.), Zhejiang, Yunnan, Shandong, Sichuan a me nā panalāʻau ʻē aʻe, ʻoiai ua pālahalaha nui ʻia, akā ʻo ka ʻāina kiʻekiʻe ka mea i hoʻopaʻa ʻia ma ka mauna ʻo Changbai ʻo Jilin, a ʻo ka hapa nui o nā waihona mineral 3~4. Ma muli o ke kiʻekiʻe o ka haumia, ʻaʻole hiki ke hana pololei a hoʻohana ʻia. ʻO ka hui kemika o ka diatomite ka nui o SiO2, loaʻa kahi mea liʻiliʻi o Al2O3, Fe2O3, CaO, MgO, etc. a me nā mea organik. Loaʻa iā Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 a me nā mea olaola. ʻO ka SiO2 ka mea maʻamau ma mua o 80%, a hiki i 94%. ʻO ka mea hao oxide o ka honua diatomaceous kiʻekiʻe he 1 ~ 1.5%, a ʻo ka ʻike alumina he 3 ~ 6%. ʻO ka hui minerala o ka diatomite ka nui o ka opal a me kona mau ʻano like ʻole, a ukali ʻia e nā mineral pālolo - hydromica, kaolinite a me nā mineral detritus. Loaʻa i nā ʻōpala mineral ka quartz, feldspar, biotite a me nā mea kūlohelohe. ʻO ka maʻiʻo organik mai ka nui o ka trace a ʻoi aku ma mua o 30%. ʻO ke kala o ka honua diatomaceous he keʻokeʻo, keʻokeʻo keʻokeʻo, keʻokeʻo a me ka hina hina-ʻeleʻele, a me nā mea'ē aʻe. ʻO ka hapa nui o ka silica o diatomite he non-crystalline, a ʻo ka ʻike o ka silicic acid soluble i ka alkali he 50 ~ 80%. Lilo ʻo Amorphous SiO2 i ke aniani ke hoʻomehana ʻia i 800 ~ 1000 ° C, a hiki ke hoʻemi ʻia ka waika silicic soluble i ka alkali i 20 ~ 30%.

honua diatomaceousʻaʻohe mea ʻawaʻawa, maʻalahi e hoʻokaʻawale i ka meaʻai, a hiki ke hoʻohana hou ʻia ma hope o ka kaʻawale ʻana. Ua ʻike ʻia e nā poʻe loea hoʻomalu pest he mea lāʻau insecticidal. ʻO ke kumu e hiki ai i ka honua diatomaceous ke pale i nā pests, ʻo ia ke kolo ʻana o nā iniseti i ka meaʻai i hui pū ʻia me ka honua diatomaceous, e hoʻopili ka honua diatomaceous i ka ʻili o ke kino iniseti, e hoʻopau i ka papa waxy o ka epidermis insect a me nā hale wai ʻē aʻe, a ke kumu i ke kino o ka pepeke. ʻO ka nele o ka wai ke alakaʻi i ka make. Hiki ke hoʻohana ʻia ka honua diatomaceous a me kāna mau mea e like me nā lāʻau pesticides a me nā herbicides ma nā māla ʻāina mahiʻai. Hiki ke puunaue ia na mea o ka honua diatomaceous i ka lewa a i ole ia e kanuia i ka lepo no ka adsorb a pepehi i kekahi mau mea ino. Hiki ke hoʻohana ʻia ka honua diatomaceous ma ke ʻano he mea lawe maikaʻi loa a me ka mea hoʻopili no nā mea kanu kemika. Hiki i nā micropores ma ka ʻili o ka honua diatomaceous ke hoʻopili like a kāʻei i nā mea kanu kemika e pale aku i ka hoʻopaʻa ʻana i ka wā lōʻihi a me ka hoʻoheheʻe ʻana a me ka agglomeration. Loaʻa iā 60-80% diatoms. ʻO ka mea kanu biochemical hou me ka lepo a me kahi liʻiliʻi o ka microbial flora hiki ke hoʻomaikaʻi i ka hana immune o ka mea kanu ponoʻī, hoʻoikaika i ka ulu ʻana o ka mea kanu, a hoʻomaikaʻi i ka lepo ponoʻī e hoʻokō i ke kumu o ka hōʻemi ʻana i ka nui o nā mea kanu maʻamau a me nā pesticides e 30-60% i ka wā ulu.