??? ????? Crystal Form of Mineral - PowerPoint PPT Presentation

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Title:

??? ????? Crystal Form of Mineral

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Title: Author: shentong Last modified by: dzdx Created Date: 3/11/2005 12:47:13 AM Document presentation format: – PowerPoint PPT presentation

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Title: ??? ????? Crystal Form of Mineral


1
??? ?????Crystal Form of Mineral
??????????????? ?????????????????? ?????????
2
???????????????
  • ??
  • ?????????????????????????
  • ????
  • ??????
  • ??????
  • ????
  • ?????
  • ????

(distorted crystal)
? ? ? ? ? ? ?
3
? ????????????????
  • (?)????????
  • 1?????(crystal habit)????
  • ?????????,?????????????????,??????????(????)?
  • ????
  • ????????
  • ???????(?????????)
  • ????????????????????????

4
2? ???????
  • (1) ??????????,??
  • 1)???
  • ?????????????????
  • ?????????????,?????????
  • 2)????
  • ??????????????????????????
  • ????????????????????????????
  • 3)???
  • ??(?????)??????????,??????????

5
2 ???????
  • (2) ?????????????,???
  • ?????
  • ???????????
  • ??????????????????????
  • ?????
  • ???????????????
  • ?????????????????
  • ?????
  • ???????
  • ???????????????
  • ?????????????????????

6
3??????????
  • 1)??????,??????????,???????
  • ????(Au)???(NaCl)??
  • 2)???????????????????????
  • ??????????????????????????
  • ??,???????????????????????
  • ??
  • 3)??????????????????????????
  • ???,??????????????????,???
  • ??????????????????

7
(?)??????????? ????
?????? (1) ???? (2)
????(????????) (3) ??? (4) ???
8
  • (1) ????(striations)
  • ????(combination striations)
  • ???????????????????????????????????????,????????
    (growth striations)??????????
  • ??????(Twin striations)
  • ?????????????????????????????????????

9
? ? ? ? ? ? ?
10
???????
11
  • (2) ????(steps)
  • ?????????????????????????? ?????
  • (3)???(growth hillock)(P198)
  • ??????????????????????????
  • (4) ??(etch figure) (P198)
  • ??????,?????????????????(???,etch pit)?
  • ???????????????????,??,?????????????????????
    ????,?????????????????????????????????????,???????
    ??,????????????

12
????
13
  • ? ???????
  • (?)??????????
  • ?????(phanerocrystalline aggregate)???????????????
    ????????? ?
  • ??????????????,???????????
  • ??(columnar)?
  • ??(acicular)?
  • ??(tabular)?
  • ??(schistic)?
  • ???(scaly)?
  • ???(foliated)?
  • ??(granular)?

14
(No Transcript)
15
?????(??)
?????(???)
?????(???)
?????(???)
16
  • ???????????
  • (1) ??????(fibrous aggregate)
  • (2) ??????(radiated aggregate)
  • (3) ??(druse)
  • ????????,??????????????????????????????????????(c
    omb)?
  • ?????(packet aggregate)???????(capillary
    aggregate)???????(dendritic aggregate)

17
??????(?????)
??????(???)
????
18
  • (?) ?????????????
  • 1??????(cryptocrystalline aggregate)
  • ???????????????????????
  • 2??????(colloidal aggregate)
  • ?????????????????????,??????
  • ?????????????????,???????????????(radial
    fibrous structure)?
  • ???????????,???????????????
  • (1) ???(secretion) ?
  • (2) ???(concretion)?
  • (3) ????????(oolitic pisolitic aggregates)
  • (4) ??????(stalactitic aggregate)?

19
  • ?
  • (1) ???(secretion)
  • ??????(???)???,?????????? ???????????
  • ?????,????,????????????
  • ????1cm???????(geode),?????
  • ????1cm??????(amygdaloid)??
  • (2) ???(concretion)
  • ????????????????????? ?????????
  • ????????????????,????1cm?????????????????????
    ???
  • ????????????????????????????????

20
?????
21
  • (3) ????????(oolitic and pisolitic aggregates)
  • ???????????????????????????????????????????????
  • ????????????????2mm,????????????
  • ????????????????
  • ?????????????????
  • (4) ??????(stalactitic aggregate)
  • ???????????,???????????,???????????????????????
  • ????????????????????????????????????????????????
    ?????
  • ????????(botryoidal)??? ?
  • ? ???(stalactite)
  • ??(stalagmite)
  • ??(stalacto-stalagmite)?

22
??(???)
???(???)
23
  • ??????????
  • A)?????(massive aggregate)
  • ????????????????????????
  • B)?????(earthy aggregate)
  • ?????????????????
  • C)??????(powdery aggregate)
  • ??????????????????????
  • D)??????(filmy aggregate)
  • ???????????(???)???
  • E)??????(dendritic aggregate )
  • ???????????????
  • F)??????(crustiform aggregate )
  • ?????????(???)??,??????????????
  • G)??????(efflorescence-like aggregate )
  • ????????????????

24
???(???)
25
????
1.  ???????????? 2.  ?????????? 3. 
????????,??????? ???????????????
26
?????
1.  ?????????????????? 2.   ???????? 3.  
????????????????????????????? 4. 
?????????????????? 5.  ?????????????? 6. 
???????????????? 7. ???????/?????????????
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