बालू  हिन्दी देवनागरी में पढ़ें।

baloo

baloo chattanon aur any dhatvik padarth vividh ke prakritik aur aprakritik sadhanon se toot phootakar bajari, baloo, gad ya chikani mitti ka roop le leti hai. yadi tukade bade hue to bajari aur yadi chhote hue to kanon, ke vistar ke hisab se unhen kramash: baloo, gad ya chikani mitti kahate hain. amarika men 0.06 se 2 mimi. tak ke aur yoorop men 0.02 se 2 mimi. tak ke kan baloo kahalate hain. bharatiy manakon ke anusar bharatiy manak chhanani sn. 480 (0.2 inch) se gujar janevale kan baloo men ho sakate hain. is sima ke andar chhote bade sabhi prakar ke kan usamen hone chahie. injiniyari men aisi baloo mahattvapoorn hai. chhote bade kanon ka anuman sookshmata mapank dvara lagaya jata hai. baloo ki ek nishchit tol bharatiy manak chhanani sn. 480, 270, 120, 60, 30 aur 15 (arthath‌ british manak chhanani 0.2 inch, aur sn. 7, 14, 25, 52 100) men se chhani jati hai. pratyek chhanani se n nikal sakanevala ansh jod liya jata hai, jo sookshmata mapank kahalata hai. mahin baloo ka sookshmata mapank 1.0 se 2.5 ke bich hona chahie. isase adhik ho to vah mota baloo kahalata hai.

baloo men milanevale padarth

yadyapi prithvi ki papadi men pae janevale sabhi prakar ke padarth, jinamen chattanen bana karati hain, baloo men pae jate hain, kintu pray: unamen se thode padarthon ki hi bahulata baloo men rahati hai. atynt vyapak roop se milanevala padarth sphatiq hai, kyonki yah chattanon men bahut hota hai aur atynt kathor evn vidaranarahit hota hai, jisase isake kan saralata se pisakar bahut barik nahin ho pate. isake atirikt yah pani men ghulata nahin, n vighatit hi hota hai. kahin kahin baloo men any anek padarthon ke sath phelspar, choonedar padarth, khanij lauh aur jvalamukhi kach adi bhi bahutayat se pae jate hain. adhikansh sphatik-baloo men thoda bahut phelspar to hota hi hai. shvet abhrak ke chhote chhote tukade bhi pray: baloo men milate hain kyonki yah naram tatha bhngur hote hue bhi bahut dhire dhire vighatit hota hai.

in samany padarthon ke atirikt kuchh bhari padarth bhi, jinase chattanen bana karati hain, jaise tamada, tooramailin, jarkan, rootail, pukharaj, pairaauksin aur ainphibol adi thodi bahut matra men sabhi prakar ki baloo men rahate hain. kahin kahin samudratat par, ya nadiyon men, dhara pravah ke karan halake padarth bah jate hain aur ye bhari padarth adhik matra men ekatr ho jate hain. ye arthik drishti se mahattvapoorn nikshep kahalate hain. inhin men niyariye tatha hire ya any maniyan sona, plaitinam, ranga, maunajait ya any khanij jinake milane ki snbhavana hoti hai, khoja karate hain.

mridbhand

kanch aur siliket udyog men silika ke roop men atynt shuddh sphatik-baloo ki badi matra men avashyakata hoti hai. vividh prakar ki bhatthiyon men astar karane ke lie bhi aisa hi baloo lagata hai. dhalaee ke karakhane men jis mitti se sanche banaye jate hain, unamen bhi yahi baloo mila rahata hai aur isake kan chikani mitti dvara paraspar bndhe rahate hain.

sphatik kan kathor aur vivaran rahit hote hain. at: sphatikabaloo apagharshak banane ke lie bhi bahut kam ata hai. tamada baloo bhi is kam ke lie atynt upayukt hai, yadyapi yah bahut adhik nahin paya jata.

baloo ka upayog

sadharan baloo ke aur bhi anek upayog hain, jinamen mukhyataya chinaeen ka masala aur knkrit ke upadan ke roop men isaka upayog ullekhaniy hai. choona ya siment baloo ke kanon ko paraspar jodakar, ek kathor snhati bana dete hain, jisapar masala ya knkrit ki samarthy bahut anshon tak nirbhar hoti hai. nirman samagri ke roop men baloo ka aur bhi upayog hai, jaise pharshon ya nivon ke niche bichhana, chhat par choona knkrit ke niche alagav parat ke roop men bichhana tatha sadakon par chhana dena adi. eeten banane ke lie bhi mitti men barik baloo hona chahie.

dharati ki papadi men baloo ki paraten ek aur drishti se bhi mahattvapoorn hai. antabhaunm jal inhin paraton men bhara rahata hai, jo kuen khodane par, ya nalakoop galane par, upalabdh hota hai aur hamari jal snbharan samasya ka samadhan snbhav banata hai. mitti ke sath mila hua baloo hi usaka jal shoshan kshamata ka adhar hai, kyonki chikani mitti ki parat pani nahin dharan kar sakati. kheton men thodi hi gaharaee par chikani mitti hone se bhoomi oosar ho jati hai. kuchh pariman men baloo mishrit mitti, jo dumat kahalati hai, kheti ke lie achchhi hoti hai.


panne ki pragati avastha
adhar
prarambhik
madhyamik
poornata
shodh

tika tippani aur sndarbh

bahari kadiyan

snbndhit lekh

varnamala kramanusar lekh khoj

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