Dorchester Minerals

2006 Annual Meeting

May 3, 2006

Exhibit 99.1

Dorchester Minerals

Forward-Looking Statements

•

Portions of this document may constitute "forward-looking

statements" as defined by federal law. Such statements are

subject to certain risks, uncertainties and assumptions.

Should one or more of these risks or uncertainties

materialize, or should underlying assumptions prove

incorrect, actual results may vary materially from those

anticipated, estimated or projected. Examples of such

uncertainties and risk factors include, but are not limited to,

changes in the price or demand for oil and natural gas,

changes in the operations on or development of the

Partnership’s properties, changes in economic and industry

conditions and changes in regulatory requirements (including

changes in environmental requirements) and the

Partnership’s financial position, business strategy and other

plans and objectives for future operations. These and other

factors are set forth in the Partnership's filings with the

Securities and Exchange Commission.

Dorchester Minerals

•

2005 Highlights

•

Reserves and Production

•

Peer Group Comparison

•

Activity Highlights

–

Leasing Activity

–

Royalty Properties

–

Net Profits Interests

–

Fayetteville Shale

•

Looking Ahead

Presentation Outline

Dorchester Minerals

2005 Highlights

Dorchester Minerals

2005 Highlights

Net

Income

$52.8 MM

$30.1 MM

Lease

Bonus

$1.7 MM

$1.6 MM

Leasing

Activity

78 leases

42 leases

Drilling

Activity

289 wells

196 wells

Cash

Distributed

$56.5 MM

$46.5 MM

2005

2004

Dorchester Minerals

Quick Look at 2005 Distributions

Royalty

Revenue

$36.8 MM

Total Revenue

$62.9 MM

Other

Revenue

$1.1 MM

NPI

Revenue

$25.0 MM

LP

Distribution

$56.5 MM

GP

Distribution

$1.6 MM

Total

Expenses

$4.8 MM

Distributions Paid in 2005 –

Reflects Q4 2004 to Q3 2005 Activity

Dorchester Minerals

0.97

1.05

1.14

1.11

1.11

1.05

1.05

1.05

1.02

1.07

1.12

1.01

-

0.20

0.40

0.60

0.80

1.00

1.20

1.40

Mcfepd

per 1000 Units

Volumes –

Prices –

Distributions

Gas Price per Mcf

2005

2003

2004

Q1

Q3

Q2

Q4

Q1

Q3

Q2

Q4

$0.10

$0.20

$0.30

$0.40

$0.50

$0.60

$0.70

$0.80

$0.90$1.20

$1.00

$-

$2.00

$4.00

$6.00

$8.00

$10.00

$12.00

Q1

Q3

Q2

Q4

0.46

0.42

0.39

0.42

0.42

0.48

0.43

0.48

0.51

0.58

0.81

0.00

$-

$0.20

$0.40

$0.60

$0.80

$1.00

$1.40

Dorchester Minerals

Reserves and Production

Dorchester Minerals

•

Total Proved Reserves

90.5 Bcfe

•

Reserves per Unit

3.20 Mcf

•

Proved Developed

99.7%

•

Production Replacement

77%

•

SEC PV

10

$344 million

•

Reserve Life Index (R/P)

8.2

Reserves and Production

Dorchester Minerals

•

Production Replacement Calculation

Reserves and Production

Actual

12/31/04

Reserves

Projected

12/31/05

Reserves

2005

Production

Actual

12/31/05

Reserves

Reserve

Revisions

Total

Reserves

(Bcfe)

90.5

93.1

81.7

Dorchester Minerals

Reserves and Production

Product Mix

Property Allocation

•

Proved Reserves on December 31, 2005

Gas

73%

Oil

27%

NPI

42%

58%

Royalty

Dorchester Minerals

Reserves and Production

•

DMLP volumetric variance by prod. month

Daily Production (MMcfepd)

2003

2004

2005

2006

0

5

10

15

20

25

30

35

Projected Volume

Actual Volume

Dorchester Minerals

Peer Group Comparison

Dorchester Minerals

Q4 05

Value of $100 from Q1 2005 through Q1 2006

Q1 05

Q2 05

Q3 05

Q1 06

Peer Group Comparison

•

Total Return (Distributions Reinvested)

$80

$100

$120

$140

$160

$180

DMLP

SJT

NASDAQ

SBR

Dorchester Minerals

Q4 05

Value of $100 from Q3 2005 through Q1 2006

Q3 05

Q1 06

Peer Group Comparison

•

Total Return (Distributions Reinvested)

Q2 06

$90

$100

$110

$120

$130

$140

DMLP

SJT

NASDAQ

SBR

Dorchester Minerals

Activity Highlights

Leasing Activity

Dorchester Minerals

Deal Structuring

•

Structure of deal can increase exploratory

exposure above conventional lease

Reward

Risk

Participate 100%

Look-Back Working Interest

Back-In Working Interest

Lease 100% (Low Bonus, High Royalty)

Lease 100% (High Bonus, Low Royalty)

Dorchester Minerals

Hybrid Lease “A”

100%

90%

30%

80%

70%

60%

40%

20%

0%

50%

10%

Traditional Lease

NRI

Royalty

Interest

25%

Lessee

Interest

56.25%

Look-Back

Interest

18.75%

DMLP “Look-Back”

Optional

participation at

casing point

Lessee

Interest

75%

Royalty

Interest

25%

Dorchester Minerals

Hybrid Lease “B”

100%

90%

30%

80%

70%

60%

40%

20%

0%

50%

10%

Lessee

Interest

75%

Traditional Lease

NRI

DMLP “Back-In”

Lessee

Interest

70%

Lessee

Interest

56.25%

ORRI 5%

Royalty

Interest

25%

Royalty

Interest

25%

APO Back-

in Interest

18.75%

Royalty

Interest

25%

Dorchester Minerals

Significant Hybrid Leases

•

Hybrid Lease “A”

–

19 transactions

–

Haley Field Area (Loving and Winkler, TX)

–

Granite Wash (Hemphill and Wheeler, TX)

•

Hybrid Lease “B”

–

4 transactions

–

Jeffress

Field (Hidalgo, TX)

Dorchester Minerals

Activity Highlights

Royalty Properties

Dorchester Minerals

Royalty Property Highlights

•

Leasing Activity

–

Consummated 78 leases and pooling elections

–

Identified 289 new wells on royalty properties

–

80 active lease offers

•

Maximizing Value of Mineral Assets

–

Lease bonus payments up to $800/acre

–

Initial royalty terms ranged from 25% to 30%

–

Hybrid leases -

“Back-In”

and “Look-Back”

–

Information franchise

Dorchester Minerals

Royalty Property Highlights

Mid-Continent

South Texas

Alabama

Dorchester Minerals

Royalty Property Highlights

•

T-Patch Field (Starr, TX)

–

8 wells completed as of 12/31/05

–

Production rates ranged up to 21 MMcfpd

–

Two wells completed in Q1 2006 (10.2% NRI)

•

Guerra Min. Trust #1:

6.7 MMcfpd, 70 bopd

•

Guerra Min. Trust #2:

11.7 MMcfpd, 250 bopd

–

Additional development tracts with higher NRI’s

Dorchester Minerals

100

1,000

10,000

100,000

100

1,000

10,000

Royalty Property Highlights

•

T-Patch Field (Starr, TX)

–

High initial production rates

–

High decline rates

Q1 05

Q2 05

Q3 05

Q4 05

Q1 06

Gas Rate (Mcfpd)

Oil Rate (bopd)

Dorchester Minerals

Royalty Property Highlights

•

Jeffress

Field (Hidalgo, TX)

–

Negotiated back-in working interest (Hybrid “B”)

•

BPO:  7.5% NRI

•

APO:  10.9% NRI

–

Indication of a significant discovery

•

Initial flow rate of 3.3 MMcfpd, 96 bopd

•

Flowing pressure of 5190 psi

with 5,990 psi

shut-in

–

417 acres leased within a 2,000 acre AMI

–

Evaluating development and exploratory potential

Dorchester Minerals

10

100

1,000

10,000

0

2

4

6

8

10

Royalty Property Highlights

•

Anadarko Basin -

Granite Wash

–

595 sections in 7 counties, Oklahoma and Texas

–

Perryman lease demonstrates continuous activity

Gas Rate (Mcfpd)

Well Count

1985

2005

1990

1995

2000

Dorchester Minerals

10

100

1,000

10,000

0

5

10

15

20

Royalty Property Highlights

•

Little Cedar Creek Field (Conecuh, AL)

–

19 wells producing and 4 wells permitted/drilling

–

Unitized for secondary recovery

Oil Rate (bopd)

Well Count

1996

2006

1998

2000

2002

2004

Dorchester Minerals

Activity Highlights

Net Profits Interests

Dorchester Minerals

Net Profits Interest Highlights

•

Increased Exposure to Upside Potential

–

Participated in 49 wells in Arkansas, Montana,

New Mexico, Oklahoma, and Texas

–

Optional working interest participation in

numerous leases

•

Maximize Value of Mineral Assets

–

Unburdened working interests (WI = NRI)

–

Information franchise

–

Leverage geographic diversification

Dorchester Minerals

Net Profits Interest Highlights

Montana

Horizontal Bakken

Arkansas

Fayetteville Shale

Mid-Continent

Granite Wash

Hugoton Area

Chase Group

Dorchester Minerals

10

100

1,000

0

1

2

3

4

5

•

Horizontal Bakken (Richland, MT)

–

Participated in 9 wells (5 wells producing)

–

Technology-driven play, multi-lateral completions

Net Profits Interest Highlights

Oil Rate (bopd)

Well Count

Q1 05

Q2 05

Q3 05

Q4 05

Q4 04

Q1 06

Dorchester Minerals

Net Profits Interest Highlights

•

Horizontal Bakken

(Richland, MT)

–

Wells typically drilled on 1280 acre units

Dorchester Minerals

•

Hugoton Area -

Operated Properties

–

2005 production within 1% of projection

–

Continuing successful stimulation program

Net Profits Interest Highlights

2004

2005

2006

Gas Rate (Mcfpd)

8,000

10,000

12,000

14,000

16,000

Projected Volume

Actual Volume

Dorchester Minerals

Activity Highlights

Fayetteville Shale

Dorchester Minerals

Fayetteville Shale Highlights

•

Eastern Arkoma Basin –

Northern Arkansas

–

9,800 net acres in 180 sections in 8 counties

Van Buren

Pope

Cleburne

White

Conway

Faulkner

HBP Acreage

Leased Acreage

Producing Wells

Permitted Wells

Dorchester Minerals

Fayetteville Shale Highlights

•

Eastern Arkoma Basin –

Northern Arkansas

–

Monitored trend development

•

Horizontal wells have tested up to 3.7 MMcfd

–

Elected to participate in two horizontal wells

•

D&C costs -

$1.4 million (6.25% WI)

–

Circulated request for proposals in January 2006

•

Competitive bidding between industry participants

–

Negotiated agreement in March 2006

•

$625 per acre bonus

•

25% royalty

•

Optional working interest participation

Dorchester Minerals

Fayetteville Shale Highlights

•

Focus Area –

Conway, Van Buren, Faulkner

Cove Creek

Gravel Hill

Griffin Mountian

Scotland

HBP Acreage

Leased Acreage

Producing Wells

Permitted Wells

Dorchester Minerals

Looking Ahead

Dorchester Minerals

Developing Plays

New York

Trenton/BR

Arkansas

Deep Shales

North Texas

Barnett Shale

Delaware Basin

Pennsylvanian

East Texas

Deep Bossier

North Dakota

Horizontal Bakken

Dorchester Minerals

2006 Annual Meeting

May 3, 2006