Hematit
Hematit, chemický vzorec Fe2O3 (oxid železitý), je klencový minerál.
Název hematit je řeckého původu, haĩma - αιματoεις (krev) přes latinské haema a vystihuje barvu minerálu. Starší český název je krevel.
Obsah[skrýt] |
Vznik
Původ magmatický, hydrotemální (střední a nižší teploty), metamorfní i sedimentární (vysrážením z mořské vody).
Morfologie
Nejčastěji v zrnitých až celistvých, paprsčitě vláknitých až zemitých agregátech, složený z oválných útvarů velikosti hrachu až máku. Méně často v hrubě krystalických agregátech nebo šupinatý. Krystaly jsou vzácné, mají tvar šupinek, tabulek, romboedrů, často dvojčatí.
Vlastnosti
- Fyzikální vlastnosti: Tvrdost 5-6 (zemité formy i 1), hustota 5,2 g/cm³, neštěpný – odlučnost je podmíněna dvojčatěním podle {0001}, lom lasturnatý, křehký. Slabě magnetický.
- Optické vlastnosti: Barva: červená, hnědá, šedá až černá, lesk kovový, matný, průhlednost: průsvitný až opaktní, vryp višňově červený, červenohnědý.
- Chemické vlastnosti: Složení: Fe 69,94 %, O 30,06 %, příměsi Ti často až do 9 %, Mn, Al. Rozpustný v koncentrované HCl. Před dmuchavkou se netaví. Žíháním v oxidačním plameni se mění v magnetit.
Odrůdy
- spekularit
- hematitová růže
Podobné minerály
goethit, limonit, pyrofanit, ilmenit, magnetit, chromit
Získávání
Hematit se těží v povrchových dolech za pomoci těžké techniky.
Využití
Důležitá ruda železa, čistý obsahuje až 70 % železa. Jemnozrnný zemitý a mletý se používá jako barvivo (rudka) nebo lešticí prášek. Někdy jako ozdobný a drahý kámen (fasetové brusy, kabošony, gemy).
Naleziště
Hojný minerál.
- Česko – Narysov, Horní Blatná, Hradiště
- Slovensko – Rudňany, Rožňava
- Švédsko – Striberg, Norberg, Blötberg
- Ukrajina – Krivoj Rog
- Rusko – Kursk
- Brazílie – Matto Grosso
- a další.
Komentáře
Přehled komentářů
https://telegra.ph/Play-live-roulette-online-uk-01-08#Play live roulette online uk
https://telegra.ph/Live-cachaça-e-cabare-01-08#Live cachaça e cabare
https://telegra.ph/Casinos-online-seguros-y-fiables-01-08#Casinos online seguros y fiables
https://telegra.ph/Casino-online-dinheiro-real-grГЎtis-01-08#Casino online dinheiro real grГЎtis
https://telegra.ph/Casinos-online-que-te-regalan-dinero-real-por-registrarte-01-08#Casinos online que te regalan dinero real por registrarte
best womens gifts for christmas
(GeraldMaips, 10. 1. 2023 21:46)best females gifts for christmas https://amzn.to/3BEmtev
what is the passto?
(Charlesrot, 10. 1. 2023 13:31)PassTo, making currency transactions easy, is committed to becoming the currency exchange benchmark in the financial industry. By creating a platform of "real-time quotations, convenient solutions, and the most complete MSO", it will be more convenient for everyone to exchange currency. During your currency transactions, PassTo will never be absent. home page: <u>https://www.passto.io/</u>
video cp
(Rihardpem, 7. 1. 2023 8:34)
Lolita Girls Fuck Collection
loli video cp
yal.su/jCs
s.yjm.pl/BbtC
tw.uy/tw11l
ice hack torches 13 lbs every week Put ic\\e right here to drop 2 pounds over night Ice + THIS = 2 pounds lighter by tomorrow
(JohnnyTrolf, 5. 1. 2023 20:36)
Fat mom currently looks like THIS (down 62 lbs).
5-sec ice hack assists Mommy of 3 thaw 62 pounds.
Mama's vengeance on her stomach fat.
https://healthyfit.yivesites.com/that-instantly-turbo-charges-your-metabolism-by-450-or-more
ice hack lanterns 13 lbs every week Put ic\\e below to go down 2 lbs overnight Ice + THIS = 2 lbs lighter by tomorrow
(JohnnyTrolf, 5. 1. 2023 3:04)
Fat mama currently appears like THIS (down 62 lbs).
5-sec ice hack assists Mom of 3 thaw 62 lbs.
Mother's retribution on her belly fat.
https://hop.clickbank.net/?affiliate=ivobee&vendor=alpilean&pg=vid
gеt nоw # bіg bonus
(PetariNhip, 3. 1. 2023 0:10)
Best onlіnе саsіno
Bіg bоnus аnd Frееsріns
Spоrt bеttіng аnd pоkеr
go now https://tinyurl.com/3tubztb3
education games online
(Dennisnok, 2. 1. 2023 10:36)
Education and learning is the process of getting or providing methodical guideline, especially at a formal setting. Discovering is the procurement of understanding or abilities through research study, experience, or being shown.
https://higheducationhere.com/ - patient education constipation!..
acc-buy.com Best Social Media Account Store hotmail gmail yahoo outlook vfemail
(Bryandrync, 2. 1. 2023 10:18)- acc-buy.com Buy Social Media Account yahoo aol hotmail outlook zoho vfemail gmail skype rambler
https://colab.research.google.com/drive/1ZlSA1bdxAHjo388ub611olrSl9-Vfk6c
(RickyLoalo, 1. 1. 2023 17:24)
https://colab.research.google.com/drive/1ZsxEOjbspxhCB8rq6qoxg0u-eLfSyKdr
https://colab.research.google.com/drive/1gFnTwjiGySqigxUSCSwl-YPzhpjMQUvo
https://colab.research.google.com/drive/10-8lxKlErq94R7CqmUzGiHGF8gXlT6zO?usp=sharing
(Thomaslop, 1. 1. 2023 0:10)
https://colab.research.google.com/drive/1c5gThRuN5lBuqLLoG9kGLab_58szrMyN?usp=sharing
https://colab.research.google.com/drive/1fx9pGgQB1j-8NgZbJN5FNh7a5VJnIvUW?usp=sharing
https://colab.research.google.com/drive/11gjQFsgGTNRmHDSSFRxZQTlpIW7BCPGG?usp=sharing
https://colab.research.google.com/drive/1fP6RMnG6EbGb7Hld-Dh_2k1jTQ-GvwXN?usp=sharing
https://colab.research.google.com/drive/1TVIZW7pMu2Ze37Mlq9OOpFrv1ugIBA2v?usp=sharing
diaherag
(VernonKex, 30. 12. 2022 10:51)
https://telegra.ph/Pinay-Filipina-2020-Jer2X-Valentine-12-07
Pills information after patients. Cautions. vrgt32
(Fabiasp, 29. 12. 2022 19:34)Pills information to patients. Cautions. https://pharmduck.com/ topical rx pharmacy
MOM TAKES A IN COITION PORN
(Timothymap, 29. 12. 2022 17:08)
Jean, his care for's younger sister, arrived at the parliament fair and early on Saturday morning.
"Hi squirt," she said. Rick didn't resent the upon it was a nickname she had prearranged him when he was born. At the convenience life, she was six and deliberation the repute was cute. They had as a last resort been closer than most nephews and aunts, with a standard hardly bit of skirt thought function she felt it was her duty to ease arrogate misery of him. "Hi Jean," his female parent and he said in unison. "What's up?" his mommy added.
"Don't you two remember, you promised to remedy me take some chattels peripheral exhausted to the сторидж shed at Mom and Dad's farm. Didn't you have in the offing some too Terri?"
"Oh, I fully forgot, but it doesn't essentials as it's all separated in the finance bedroom." She turned to her son. "Can you serve Rick?"
"Yeah," He said. "I've got nothing planned for the day. Tod's discernible of burgh and Jeff is not feeling up to snuff in bed, so there's no rhyme to idle discernible with."
As brawny as Rick was, it was motionless a myriad of handiwork to load the bed, strongbox and boxes from his aunts shelter and from his own into the pickup. At the last moment after two hours they were gracious to go. Rick covered the stuff, because it looked like дождь and measured had to move a couple of the boxes inside the truck setting it on the bum next to Jean.
"You're succeeding to suffer with to gather on Rick's lap," Jean said to Terri, "There won't be sufficiently lodgings otherwise."
"That will be alright, won't it Rick?" his mother said.
"Effectively as extended as you don't weigh a ton, and abduct up the whole side of the stuff," he said laughing.
"I'll have you separate I weigh inseparable hundred and five pounds, boyish bloke, and I'm just five foot three, not six foot three." She was grinning when she said it, but there was a bantam bit of pride in her voice. At thirty-six, his matriarch had the body and looks of a capital coterie senior. Although infrequent high circle girls had 36C boobs that were full, solidify and had such first nipples, with the addition of a number ten ass. Vocation his attention to her body was not the kindest crap she could be suffering with done.
He settled himself in the seat and she climbed in and, placing her feet between his, she lowered herself to his lap. She was wearing a thin summer put on fancy dress and he had seen not a bikini panty cortege and bra under it. He directly felt the fervour from her main part flow into his crotch area. He turned his mind to the means ahead. Jean pulled away, and moments later they were on the wilderness approach to the steading, twenty miles away.
https://hentai0day.com/
loli video cp
(oshuavon, 26. 12. 2022 23:49)
Lolita Girls Fuck Collection
loli video cp
tki.sk/4lL6N7
s.yjm.pl/BbtC
tw.uy/tw11l
https://colab.research.google.com/drive/1Yp2vGngIdkyNHQ_bu4CaW4sUtka9Y_rY?usp=sharing
(Thomaslop, 26. 12. 2022 15:29)
https://colab.research.google.com/drive/1J7OVR-0wsWUVma8f6SuOGs-mKEwzs0w2?usp=sharing
https://colab.research.google.com/drive/1DPeMbpwK3sk719bDm3sBBJJEmUjjzdVQ?usp=sharing
https://colab.research.google.com/drive/1M50XQXomRIouOrWM5oluBMXIx6bl0GEj?usp=sharing
https://colab.research.google.com/drive/1YX1UkHyXx1vi2_JmSHCFpEDTY8cwkAXW?usp=sharing
https://colab.research.google.com/drive/1JuCUMIxpA8kTnLCN6QKI8BeiJsJsJcRS?usp=sharing
loli video cp
(oshuavon, 26. 12. 2022 7:10)
Lolita Girls Fuck Collection
loli video cp
tki.sk/4lL6N7
s.yjm.pl/BbtC
tw.uy/tw11l
Pills tidings sheet. Variety names. hkg57y
(FiBlulp, 26. 12. 2022 1:16)Can you get an inhaler without a prescription https://symbicortinhaler.com/ budesonide inhaler dosage
loli video
(ChalesRaddy, 24. 12. 2022 22:56)
Lolita Girls Fuck Collection
loli video cp
tki.sk/4lL6N7
s.yjm.pl/BbtC
tw.uy/tw11l
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53
https://telegra.ph/Juegos-de-casinos-online-gratis-01-08#Juegos de casinos online gratis
(Geraldaddiz, 12. 1. 2023 15:53)